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 ...

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

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

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 ...

As people return to the structures spared from Los Angeles wildfires, experts warn that they should be careful of the air ...

Air quality in Metro Vancouver is not being impacted by the wildfires raging in California. According to officials, the air ...

Despite Tuesday’s green map from the South Coast Air Quality Management District, showing air quality in Los Angeles County ...

A Reuters analysis shows that Berkshire coal plants emit more nitrogen oxide gases than any other coal-fired fleet in the ...

People are taking precautions as multiple wildfires cause poor air quality across a wide swath of Los Angeles County. Many ...