GPS nav apps may be good for individual drivers' commute times, but they may also be slowing traffic overall and ruining neighborhood vibes across the nation. (Dreamstime/TNS)
Dear EarthTalk: What are the environmental pros and cons of so many of us relying on GPS apps (Waze, Google Maps, etc.) to get around these days? — B. Rogers, Newark, New Jersey
It’s hard to measure whether having GPS apps on our smartphones is positive or negative for the planet, but some environmentalists are skeptical.
Indeed, the rise of Waze, Google Maps, Inrix and other apps that respond to live traffic data to reroute drivers accordingly — not to mention the concomitant proliferation of app-following Uber and Lyft drivers — has turned millions of formerly main-route-following drivers into sneaky shortcut seekers. Formerly quiet peaceful neighborhoods may never be the same again.
On the plus side, the widespread use of these apps saves individual drivers some time and may slightly reduce the amount of time we all spend burning extra fuel by idling in congested traffic. But the data on this is mixed and warrants further research.
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While you may have gotten to work three minutes faster this morning, what was the cost? Neighborhoods everywhere are miffed at the proliferation of cars racing through formerly quiet back streets to circumvent the latest highway logjam.
The problem has been especially noticeable in already car-crazed Los Angeles, where neighborhood streets filled up with traffic once Waze hit the market in 2011 and started alerting Angelinos of the fastest, least congested routes to and fro. As more and more drivers followed Waze’s directions, the app sent them deeper and deeper into formerly forlorn byways. With Google Maps, Inrix and others following Waze’s lead, the problem has only gotten worse in recent years.
Research out of the University of California’s Institute of Transportation Studies (ITS) concludes that while GPS apps are helping individuals get from point A to B faster, they are also making congestion worse overall. ITS’ traffic simulations show how freeway flow changes in response to an accident when no drivers use GPS apps versus when 20% of drivers have them activated. With more app-using drivers, congestion builds up at off-ramps and traffic on the highway slows.
“The situation then gets much worse because hundreds of people just like you want to go on the side streets, which were never designed to handle the traffic,” says ITS director Alexandre Bayen. “So, now, in addition to congesting the freeway, you’ve also congested the side streets and the intersections.”
Critics of the apps blame the software designers — not us consumers just trying to get to and from work or the grocery store — for the negative effects on traffic flows and neighborhood peace. If the apps are so smart, why can’t they disperse drivers onto different routes and away from back streets and quiet neighborhoods to smartly reduce congestion overall?
To wit, later this year Google Maps will start routing drivers to the most fuel-efficient route — not necessarily the fastest — to reduce greenhouse gas emissions and save drivers money in fuel costs. If the greener route is significantly slower than another way, the app will give users the option to choose for themselves, but at least this move is a nod to how much greenhouse gas busting power a little bit of code on your phone can have to help save the planet.
Counties projected to have the most extreme heat days in 2050
Counties projected to have the most extreme heat days in 2050
Climate change and global warming are nothing new—though, some are still in denial of the existence and negative impacts of these phenomena. Though the media lives for hyping up big weather phenomena, actual scientific research and data reveal the earth is, in fact, heating up at an alarming rate. Much of global warming is the product of greenhouse gas emissions caused by humans and their activities. In the 20th century, the world saw a 1.44-degree Fahrenheit increase in its mean surface temp. Since the 1970s, summer temperatures have been on a steady climb, increasing 0.4 degrees every 10 years in the U.S. and 2 degrees overall.
Not all areas are equal in terms of climate change. In the U.S., the fastest-warming regions are in Southern California and western Nevada, rising as much as 1.32 degrees Fahrenheit per decade and 5 degrees overall. Stacker put together a list of 50 U.S. counties projected to have the most extreme heat days in 2050 with data taken from the Centers for Disease Control and Prevention. These predictions were last updated in December of 2018. Extreme heat days are defined as days in which the max temperature hits above 100 or 90 Fahrenheit. The counties are ranked by the projected number of 100-degree days under a low emissions scenario with ties broken by 90-degree days under the same scenario. Keep reading to find out if your county, or a county near you, was hot enough to make the list.
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#49. Collingsworth County, Texas (tie)
Projected 100° days in 2050:
- Low emissions scenario: 40 days (+8 days from 2016)
- High emissions scenario: 47 days (+15 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 117 days (+16 days from 2016)
- High emissions scenario: 123 days (+22 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 16 nights
- High emissions scenario: 26 nights
#49. Childress County, Texas (tie)
Projected 100° days in 2050:
- Low emissions scenario: 40 days (+1 days from 2016)
- High emissions scenario: 47 days (+8 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 117 days (+8 days from 2016)
- High emissions scenario: 123 days (+14 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 26 nights
- High emissions scenario: 39 nights
#48. Cottle County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 41 days (+1 days from 2016)
- High emissions scenario: 48 days (+8 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 121 days (+13 days from 2016)
- High emissions scenario: 127 days (+19 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 24 nights
- High emissions scenario: 36 nights
#47. Hardeman County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 42 days (+2 days from 2016)
- High emissions scenario: 48 days (+8 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 117 days (+3 days from 2016)
- High emissions scenario: 123 days (+9 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 36 nights
- High emissions scenario: 49 nights
#46. Baylor County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 42 days (-1 days from 2016)
- High emissions scenario: 49 days (+6 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 121 days (+10 days from 2016)
- High emissions scenario: 127 days (+16 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 35 nights
- High emissions scenario: 48 nights
#45. Haskell County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 42 days (+4 days from 2016)
- High emissions scenario: 48 days (+10 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 129 days (+15 days from 2016)
- High emissions scenario: 135 days (+21 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 41 nights
- High emissions scenario: 54 nights
#44. Brooks County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 42 days (+24 days from 2016)
- High emissions scenario: 53 days (+35 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 173 days (+38 days from 2016)
- High emissions scenario: 182 days (+47 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 86 nights
- High emissions scenario: 106 nights
#43. Archer County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 43 days (+5 days from 2016)
- High emissions scenario: 48 days (+10 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 118 days (+12 days from 2016)
- High emissions scenario: 122 days (+16 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 43 nights
- High emissions scenario: 55 nights
#42. Winkler County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 43 days (+2 days from 2016)
- High emissions scenario: 52 days (+11 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 141 days (+20 days from 2016)
- High emissions scenario: 149 days (+28 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 19 nights
- High emissions scenario: 31 nights
#41. Cotton County, Oklahoma
Projected 100° days in 2050:
- Low emissions scenario: 44 days (+12 days from 2016)
- High emissions scenario: 50 days (+18 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 117 days (+11 days from 2016)
- High emissions scenario: 121 days (+15 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 33 nights
- High emissions scenario: 44 nights
#40. King County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 45 days (+4 days from 2016)
- High emissions scenario: 52 days (+11 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 128 days (+17 days from 2016)
- High emissions scenario: 134 days (+23 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 18 nights
- High emissions scenario: 29 nights
#39. Shasta County, California
Projected 100° days in 2050:
- Low emissions scenario: 46 days (+25 days from 2016)
- High emissions scenario: 52 days (+31 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 106 days (+16 days from 2016)
- High emissions scenario: 110 days (+20 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 12 nights
- High emissions scenario: 17 nights
#38. Tehama County, California
Projected 100° days in 2050:
- Low emissions scenario: 46 days (+10 days from 2016)
- High emissions scenario: 52 days (+16 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 110 days (+14 days from 2016)
- High emissions scenario: 114 days (+18 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 8 nights
- High emissions scenario: 13 nights
#37. Madera County, California
Projected 100° days in 2050:
- Low emissions scenario: 46 days (-20 days from 2016)
- High emissions scenario: 53 days (-13 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 116 days (+6 days from 2016)
- High emissions scenario: 120 days (+10 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 4 nights
- High emissions scenario: 6 nights
#36. Greer County, Oklahoma
Projected 100° days in 2050:
- Low emissions scenario: 46 days (+19 days from 2016)
- High emissions scenario: 52 days (+25 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 118 days (+12 days from 2016)
- High emissions scenario: 123 days (+17 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 27 nights
- High emissions scenario: 38 nights
#35. Tillman County, Oklahoma
Projected 100° days in 2050:
- Low emissions scenario: 46 days (+9 days from 2016)
- High emissions scenario: 51 days (+14 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 119 days (+8 days from 2016)
- High emissions scenario: 123 days (+12 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 35 nights
- High emissions scenario: 47 nights
#34. Jackson County, Oklahoma
Projected 100° days in 2050:
- Low emissions scenario: 46 days (+8 days from 2016)
- High emissions scenario: 52 days (+14 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 120 days (+7 days from 2016)
- High emissions scenario: 125 days (+12 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 31 nights
- High emissions scenario: 42 nights
#33. Tulare County, California
Projected 100° days in 2050:
- Low emissions scenario: 46 days (-44 days from 2016)
- High emissions scenario: 54 days (-36 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 122 days (-3 days from 2016)
- High emissions scenario: 126 days (+1 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 7 nights
- High emissions scenario: 11 nights
#31. Foard County, Texas (tie)
Projected 100° days in 2050:
- Low emissions scenario: 46 days (-3 days from 2016)
- High emissions scenario: 53 days (+4 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 124 days (+11 days from 2016)
- High emissions scenario: 129 days (+16 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 37 nights
- High emissions scenario: 50 nights
#31. Kings County, California (tie)
Projected 100° days in 2050:
- Low emissions scenario: 46 days (-50 days from 2016)
- High emissions scenario: 53 days (-43 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 124 days (-3 days from 2016)
- High emissions scenario: 128 days (+1 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 6 nights
- High emissions scenario: 9 nights
#30. Wichita County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 47 days (+12 days from 2016)
- High emissions scenario: 52 days (+17 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 120 days (+14 days from 2016)
- High emissions scenario: 124 days (+18 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 45 nights
- High emissions scenario: 57 nights
#29. Wilbarger County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 47 days (+1 days from 2016)
- High emissions scenario: 53 days (+7 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 127 days (+9 days from 2016)
- High emissions scenario: 130 days (+12 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 43 nights
- High emissions scenario: 56 nights
#28. Stonewall County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 47 days (+1 days from 2016)
- High emissions scenario: 54 days (+8 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 129 days (+11 days from 2016)
- High emissions scenario: 134 days (+16 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 25 nights
- High emissions scenario: 39 nights
#27. McMullen County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 47 days (-6 days from 2016)
- High emissions scenario: 57 days (+4 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 166 days (+32 days from 2016)
- High emissions scenario: 172 days (+38 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 76 nights
- High emissions scenario: 93 nights
#26. Harmon County, Oklahoma
Projected 100° days in 2050:
- Low emissions scenario: 48 days (+13 days from 2016)
- High emissions scenario: 55 days (+20 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 125 days (+15 days from 2016)
- High emissions scenario: 130 days (+20 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 21 nights
- High emissions scenario: 32 nights
#25. Knox County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 48 days (+1 days from 2016)
- High emissions scenario: 54 days (+7 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 134 days (+19 days from 2016)
- High emissions scenario: 139 days (+24 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 36 nights
- High emissions scenario: 50 nights
#24. Graham County, Arizona
Projected 100° days in 2050:
- Low emissions scenario: 50 days (+24 days from 2016)
- High emissions scenario: 60 days (+34 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 140 days (+36 days from 2016)
- High emissions scenario: 146 days (+42 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 12 nights
- High emissions scenario: 19 nights
#23. Washington County, Utah
Projected 100° days in 2050:
- Low emissions scenario: 53 days (+27 days from 2016)
- High emissions scenario: 62 days (+36 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 122 days (+28 days from 2016)
- High emissions scenario: 126 days (+32 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 12 nights
- High emissions scenario: 17 nights
#22. Fresno County, California
Projected 100° days in 2050:
- Low emissions scenario: 54 days (-29 days from 2016)
- High emissions scenario: 62 days (-21 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 125 days (+3 days from 2016)
- High emissions scenario: 128 days (+6 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 9 nights
- High emissions scenario: 13 nights
#21. Ward County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 54 days (+4 days from 2016)
- High emissions scenario: 64 days (+14 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 154 days (+30 days from 2016)
- High emissions scenario: 162 days (+38 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 20 nights
- High emissions scenario: 34 nights
#20. Loving County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 55 days (+3 days from 2016)
- High emissions scenario: 64 days (+12 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 150 days (+26 days from 2016)
- High emissions scenario: 158 days (+34 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 12 nights
- High emissions scenario: 23 nights
#19. Riverside County, California
Projected 100° days in 2050:
- Low emissions scenario: 56 days (+24 days from 2016)
- High emissions scenario: 63 days (+31 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 129 days (+24 days from 2016)
- High emissions scenario: 133 days (+28 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 14 nights
- High emissions scenario: 17 nights
#18. Kern County, California
Projected 100° days in 2050:
- Low emissions scenario: 58 days (-28 days from 2016)
- High emissions scenario: 65 days (-21 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 126 days (0 days from 2016)
- High emissions scenario: 130 days (+4 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 30 nights
- High emissions scenario: 36 nights
#17. Presidio County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 58 days (+44 days from 2016)
- High emissions scenario: 66 days (+52 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 149 days (+50 days from 2016)
- High emissions scenario: 157 days (+58 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 34 nights
- High emissions scenario: 46 nights
#16. Dimmit County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 58 days (-5 days from 2016)
- High emissions scenario: 68 days (+5 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 171 days (+37 days from 2016)
- High emissions scenario: 178 days (+44 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 92 nights
- High emissions scenario: 107 nights
#15. Nye County, Nevada
Projected 100° days in 2050:
- Low emissions scenario: 60 days (+19 days from 2016)
- High emissions scenario: 67 days (+26 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 124 days (+23 days from 2016)
- High emissions scenario: 129 days (+28 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 15 nights
- High emissions scenario: 20 nights
#14. Maverick County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 60 days (-2 days from 2016)
- High emissions scenario: 70 days (+8 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 167 days (+32 days from 2016)
- High emissions scenario: 174 days (+39 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 95 nights
- High emissions scenario: 109 nights
#13. La Salle County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 60 days (+2 days from 2016)
- High emissions scenario: 70 days (+12 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 173 days (+38 days from 2016)
- High emissions scenario: 181 days (+46 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 87 nights
- High emissions scenario: 103 nights
#12. Reeves County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 68 days (+15 days from 2016)
- High emissions scenario: 78 days (+25 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 162 days (+35 days from 2016)
- High emissions scenario: 171 days (+44 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 15 nights
- High emissions scenario: 27 nights
#11. Zapata County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 73 days (+12 days from 2016)
- High emissions scenario: 86 days (+25 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 189 days (+53 days from 2016)
- High emissions scenario: 196 days (+60 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 102 nights
- High emissions scenario: 119 nights
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#10. Starr County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 73 days (+15 days from 2016)
- High emissions scenario: 86 days (+28 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 195 days (+55 days from 2016)
- High emissions scenario: 203 days (+63 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 102 nights
- High emissions scenario: 120 nights
#9. Pima County, Arizona
Projected 100° days in 2050:
- Low emissions scenario: 75 days (+37 days from 2016)
- High emissions scenario: 85 days (+47 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 164 days (+53 days from 2016)
- High emissions scenario: 169 days (+58 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 43 nights
- High emissions scenario: 53 nights
#8. Mohave County, Arizona
Projected 100° days in 2050:
- Low emissions scenario: 79 days (+12 days from 2016)
- High emissions scenario: 86 days (+19 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 145 days (+26 days from 2016)
- High emissions scenario: 149 days (+30 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 57 nights
- High emissions scenario: 62 nights
#7. Webb County, Texas
Projected 100° days in 2050:
- Low emissions scenario: 79 days (+27 days from 2016)
- High emissions scenario: 91 days (+39 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 189 days (+53 days from 2016)
- High emissions scenario: 195 days (+59 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 115 nights
- High emissions scenario: 129 nights
#6. Clark County, Nevada
Projected 100° days in 2050:
- Low emissions scenario: 88 days (+25 days from 2016)
- High emissions scenario: 95 days (+32 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 147 days (+35 days from 2016)
- High emissions scenario: 151 days (+39 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 51 nights
- High emissions scenario: 59 nights
#5. Pinal County, Arizona
Projected 100° days in 2050:
- Low emissions scenario: 111 days (+35 days from 2016)
- High emissions scenario: 118 days (+42 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 180 days (+49 days from 2016)
- High emissions scenario: 184 days (+53 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 64 nights
- High emissions scenario: 72 nights
#4. Maricopa County, Arizona
Projected 100° days in 2050:
- Low emissions scenario: 115 days (+24 days from 2016)
- High emissions scenario: 122 days (+31 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 182 days (+47 days from 2016)
- High emissions scenario: 186 days (+51 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 77 nights
- High emissions scenario: 84 nights
#3. La Paz County, Arizona
Projected 100° days in 2050:
- Low emissions scenario: 120 days (+28 days from 2016)
- High emissions scenario: 124 days (+32 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 181 days (+46 days from 2016)
- High emissions scenario: 184 days (+49 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 84 nights
- High emissions scenario: 90 nights
#2. Imperial County, California
Projected 100° days in 2050:
- Low emissions scenario: 127 days (+15 days from 2016)
- High emissions scenario: 131 days (+19 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 192 days (+52 days from 2016)
- High emissions scenario: 195 days (+55 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 76 nights
- High emissions scenario: 82 nights
#1. Yuma County, Arizona
Projected 100° days in 2050:
- Low emissions scenario: 132 days (+29 days from 2016)
- High emissions scenario: 136 days (+33 days from 2016)
Projected 90° days in 2050:
- Low emissions scenario: 194 days (+55 days from 2016)
- High emissions scenario: 197 days (+58 days from 2016)
Projected extreme heat nights (75°+) in 2050:
- Low emissions scenario: 98 nights
- High emissions scenario: 104 nights
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