Smoke from Canadian wildfires hovered over several Midwestern over the weekend, bringing warnings of unhealthy air for at ...

The charging clean air zone was cancelled after a spectacular U-turn in 2022 - and led to more arguments and thousands of ...

At 5:52 p.m. on Sunday, the National Weather Service reported an updated air quality alert in effect until Tuesday at ...

The National Weather Service reported an air quality alert at 11:46 p.m. on Sunday in effect until Tuesday at midnight for ...

Smoke from widespread Canadian wildfires has spread into the US, particularly affecting the Midwest and Northeast, leading to ...

Portland and the rest of the southern coast of Maine is under moderate conditions for Ozone Monday. Smoke from Canadian wildfires is being pushed through the state ahead of a cold front, according to ...

Democratic Gov. Gavin Newsom has sparred this summer with California Republicans and President Donald Trump over the issue.

On Sunday at 5:05 p.m. an updated air quality alert was reported by the National Weather Service in effect until Monday at ...

The Department of Environmental Protection (DEP) has issued an air quality warning for Monday in parts of northeastern ...

Beijing's researchers developed a new PM2.5 analysis method to identify pollution sources and help reduce air pollution.