Wildfires have spread across the planet for millennia, but they are increasing as the climate warms. Decimated forests, ...

An air quality alert for northwest and north central Minnesota went into effect at 6 a.m. on Friday and could be extended into Saturday.

An air quality advisory is in effect for the Bay Area on Friday, as smoke from wildfires burning in far Northern California ...

Smoke from wildfires burning in the northern Sacramento Valley may bring hazy skies and unhealthy air to parts of the Bay ...

The Minnesota Pollution Control Agency issued an air quality alert Friday, July 11, for northwest and north central Minnesota. The alert takes effect 6 a.m. and runs until 6 p.m. Friday. Heavy ...

Smoke from the Green Fire — a 5,000-acre fire burning west of Shasta Lake — could soon reach the Bay Area, according to the National Weather Service. Satellite imagery showed the smoke moving south ...

Agencies monitoring wildfires in Alaska have elevated the state to Preparedness Level 5, which is the highest level, as wildfire activity continues across the state.

A haze visible in parts of the Valley is from smoke making its way down from multiple fires in Northern California.

As the summer's sunny days take hold, many people turn to outdoor exercise. But in parts of North America, pleasant weather ...

Research shows that long-term exposure to wildfire smoke is linked to lung diseases, heart disease and other conditions. Since these illnesses take decades to develop, scientists think that the health ...

Opinion: Each year we see larger and more severe fires and smoke. It threatens our lives. Municipal and agricultural ...

When air quality is ranked "unhealthy for vulnerable groups" it means PM 2.5 are at levels that can cause problems for people ...