After fires destroyed multiple neighborhoods across Los Angeles County, many residents looked up to find blue, smoke-free ...

Air quality in wildfire-stricken Los Angeles improved on Thursday from hazardous peaks hit earlier this month, as tiny soot ...

Calculating air pollution from wildfires and other events has become more complicated. That doesn’t mean it’s necessarily ...

Wear a tight-fitting N95 mask at the bare minimum, but a P100 is better, experts say. Wear long sleeves, eye protection, ...

Already known for having some of the worst air quality in the U.S., people in Southern California are now also at risk of ...

Wildfires are tearing through thousands of acres in Los Angeles County in California, as strong Santa Ana winds stoke the ...

Arizona is the only state with 'unhealthy' air quality. Part of it stems from our geography, but part also comes from our choices.

In the current day we wake up to our air purifiers, smartphones warning us that the air quality is in the ‘very poor’ or ...

Good (Green): 0-50 AQI means there is little or no health risk associated with air quality. Moderate (Yellow): 51-100 AQI ...

I've lived in Oregon for a decade, meaning I've experienced multiple wildfire seasons. You learn quickly, in these conditions ...

NCR's air quality on Wednesday invoked curbs under stage 4 of the Graded Response Action Plan (GRAP) amid a sharp dip in air ...

Angelenos still bothered by the smell of smoke may be surprised to see that Air Quality Index numbers returned to “healthy” or “moderate” levels this week in L.A. County, but they shouldn’t breathe a ...