The advisories impact large areas of Idaho, Oregon, Montana and Washington, lasting through the end of January.
Recent data from the Environmental Protection Agency shows air quality in certain regions of the U.S. is deteriorating, ...
Air quality remains a big concern in Los Angeles County, and not just for those nearby the Palisades and Eaton fires.
(Reuters) - Air quality in wildfire-stricken Los Angeles improved on Thursday from hazardous peaks hit earlier this month, as ...