The air quality in the national capital has shown significant improvement bringing much-needed respite to the residents.

Erin Davis/Axios Visuals Air quality in Salt Lake City is getting worse, according to year-over-year data. Why it matters: Long-term exposure to poor air quality is harmful to our health. By the ...

Wildfires like those in Los Angeles that destroy urban structures release toxic chemicals, including lead, into the air.

Public comments on a proposed state rule aimed at improving air quality in Fairbanks and North Pole close Friday, leaving ...