As smoke from Canadian wildfires blanketed New Haven in 2023, it sent fine particle pollution soaring to more than 15 times the normal daily level. The sky turned hazy, health officials urged ...

WASHINGTON — The air quality is showing signs of improvement Saturday afternoon after starting with unhealthy air. As of noon ...

The City of Yes plan has increased interest in air rights deals, particularly in Manhattan, by expanding the range of lots that can receive transferable development rights from landmarked ...

On air quality maps, purple signifies the worst of it. In reality, it’s a thick, hazardous haze that’s disrupting daily life for millions of people across the U.S. and Canada, blotting out ...

In recent months, eight U.S. cities have experienced unnaturally colored skies—ranging from eerie green glows and purple sunsets to persistent orange haze. Experts suggest causes like pollution ...

The Pennsylvania Department of Environmental Protection has issued a Code Orange Air Quality Alert for the Susquehanna Valley.

El Paso sees worsening air quality amid New Mexico forest fires.

By ELÉONORE HUGHES RIO DE JANEIRO (AP) — A hot-air balloon caught fire and tumbled from the sky on Saturday in Brazil ’s southern state of Santa Catarina, killing eight people, firefighters ...

The heat index will push into the low 90s. A Code Orange Air Quality Alert has been issued for Allegheny, Beaver, Butler, Washington, Westmoreland, Fayette and Armstrong counties for Sunday.