The primary pollutant in Milwaukee on Monday is PM2.5, which can be caused by wildfire smoke, vehicles and power plants.

A Code Orange air quality alert has been issued for south-central Pennsylvania, including Lancaster County, beginning on ...

The Trump Environmental Protection Agency delivered a significant blow to longstanding US climate policy on Thursday, finalizing rules to revoke a 2009 scientific finding that human-caused climate ...

The EPA has repealed a key climate finding and changed how it weighs pollution's health impacts. Experts and patients say the shift could affect air quality and public health.

Law firms representing the NAACP sent xAI a notice of intent to sue over alleged Clean Air Act violations in Mississippi.

This winter warm-up was an odd one because it came without much wind. It was nearly calm over the last day. Typically, a big winter warm-up is blown in on a strong southwest wind, which doesn’t allow ...

A research team from the Max Planck Institute for Chemical Ecology has shown in a new study that ants returning from habitats ...

A construction materials manufacturing company with operations in Santa Rosa, Forestville and Windsor agreed to pay nearly $1.3 million in fines to resolve allegations it repeatedly violated ...

The Greater Lansing area is experiencing unhealthy air for sensitive groups on Monday, Feb. 16, as melting snow releases ...

The National Weather Service reported an air quality alert at 3:30 p.m. on Monday in effect until Wednesday at midnight for ...

Air pollution isn’t just an outside problem. According to Consumer Reports, the air inside our homes might not be as clean as we think.