The advisories impact large areas of Idaho, Oregon, Montana and Washington, lasting through the end of January.

Even though the Palisades and Eaton fires are now mostly contained, the Santa Ana winds have led to new fires flaring up ...

Toxic smoke and dangerous particulate pollution are spreading far beyond the flames, leaving air quality at unhealthy levels ...

Erin Davis/Axios Visuals Air quality is worsening in the Upper Midwest and Northern California, according to year-over-year data. Why it matters: Poor air quality can lead to long-term health problems ...

A new study commissioned by the city mapped the severity of extreme heat and poor air quality around Bloomington to focus mitigation efforts. Bloomington’s Assistant Director of Sustainability ...

The advisory was extended through 7 p.m. Wednesday by the South Coast Air Quality Management District. It includes most of Los Angeles, Orange and Riverside counties in the South Coast Air Basin ...

The report analysed the effects of air pollution in the south of England Air pollution is leading to long-term health problems in Dorset, Hampshire, and the Isle of Wight, and is putting a strain ...

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Oregon environmental regulators gave a key stamp of approval to a proposed $2.5 billion biofuel refinery along the Columbia River despite continued opposition from environmental groups and tribes ...

The upcoming polar vortex will bring arctic air from Canada down throughout most of the U.S. While not as severe as the 2021 Great Texas Freeze, the phenomenon will quickly drop temperatures into ...