Milwaukee, Ozaukee, Racine, Kenosha and Sheboygan are all under a poor air quality alert from noon to 11 p.m., according to ...

The alert comes as humidity is expected to increase Tuesday, with high temperatures in the mid 80s to low 90s, with heat indices reaching 100 by Wednesday.

Northern Minnesota and northern Wisconsin remain under an Air Quality Alert Monday due to wildfire smoke. Conditions are ...

The Rochester area is still having some air quality concerns on Tuesday because of smoke from Canadian wildfires.

Treating drinking water to tackle multiple pollutants could prevent more than 50,000 cancer cases in the U.S., a new study ...

Much of the Upper Midwest continues dealing with swaths of unhealthy air because of drifting smoke from Canadian wildfires, covering the northern region of the U.S. at a time when people want to be ...

After years of complaints and legal battles from members of the surrounding community, Colorado’s Rocky Mountain Metropolitan ...

Research in recent years has identified issues affecting rivers and aquatic life in the Jefferson River Basin, including low dissolved oxygen, warm temperatures, algae blooms and nutrients.

Officials have issued an air quality alert for around 10 million Americans, telling them to minimize outdoor activities and ...