There is an air quality alert in Massachusetts Thursday. Here's what's behind the warning for the Boston area.

A Chicago Air Quality Alert has been extended through Friday as smoke from Canada wildfires has pushed the AQI into unhealthy ...

An air quality alert has been issued for NYC and N.J. on Wednesday, as smoke from the Canadian wildfires blows into the ...

An air quality alert is in effect until midnight Thursday for the Chicago area as Canadian wildfires continue.

EDT on Friday, the National Weather Service reported an air quality alert in effect until Saturday at midnight EDT for Van ...

An air quality alert has been issued for particle pollution in all New Hampshire counties. The National Weather Service said ...

Some areas may only see a few hours of alert-level smoke concentrations due to the relatively fast movement of the ...

An air quality alert was reported by the National Weather Service on Saturday at 9:56 a.m. in effect until 10 p.m. for Oneida ...

An air quality alert was reported by the National Weather Service on Friday at 11:55 a.m. EDT in effect until Saturday at ...

On Thursday at 9:39 a.m. an updated air quality alert was reported by the National Weather Service in effect until Friday at ...

Active children, the elderly and people with asthma and COPD are more likely to suffer an increase in the number and severity ...

At 10:21 a.m. on Friday, the National Weather Service reported an air quality alert in effect until Saturday at 10:30 a.m.