An air quality alert was issued by the National Weather Service in-Sullivan at 12:20 p.m. on Thursday, Aug. 7.

Freeway corridor near Santa Clarita, Western San Gabriel Mountains/Highway 14 Corridor and Eastern San Gabriel Mountains are under an air quality alert which was reported by the National Weather ...

At 4:19 p.m. on Tuesday, the National Weather Service reported an updated air quality alert in effect until Wednesday at ...

An updated air quality alert was reported by the National Weather Service on Monday at 3:45 p.m. in effect until Tuesday at ...

Air quality levels are predicted to score higher than 100 on the air quality index for fine particulates, with the alert ...

An updated air quality alert was reported by the National Weather Service on Tuesday at 4:52 p.m. in effect until Thursday at ...

On Tuesday at 12:37 p.m. EDT the National Weather Service reported an updated air quality alert in effect until Thursday at ...

On Monday at 3:01 p.m. EDT the National Weather Service reported an air quality alert in effect until Tuesday at 11:45 p.m.

Concern for poor air quality in the greater Chicago area remains as the Illinois EPA extends its alert until Thursday night.

Though wildfire smoke was to credit for poor air quality earlier in the week, Wednesday's alert is due to high-levels of ozone in the air.

At 9:54 a.m. on Tuesday, the National Weather Service reported an air quality alert in effect until Wednesday at midnight for ...

On Monday at 4:48 p.m. the National Weather Service reported an updated air quality alert in effect until Wednesday at ...