Extreme heat warnings remain in place for parts of southeast California, southern Nevada and much of Arizona -- where high ...

Smoke from the more than 700 wildfires burning in Canada is continuing to blanket parts of the Midwest for a final day.

Chicago and Minneapolis' air quality was in the "unhealthy" category, which ranks as level four of six on the Air Quality ...

On Thursday, the temperature at the Palm Springs International Airport reached a high of 117 degrees. ABC's Trevor Ault was ...

Air quality alerts are in effect on Tuesday in 10 states as toxic smoke from hundreds of wildfires burning in Canada ...