Learn what the air quality index (AQI) means, how it impacts your health, and how to stay safe when pollution is high.

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

Indicators like the Air Quality Index (AQI), commonly used to track air pollution levels, provide a rough sense of the ...

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

Dia Mirza, who was appointed as United Nations goodwill ambassador for the Environment Programme, appealed to the Chief ...

Hanoi authorities are under significant pressure to improve air quality, particularly as the city rotates in and out of the ...

If you have been hearing about poor air quality in New York City Friday, you can breathe a deep sigh of relief (literally): ...

Those groups particularly sensitive to particulate matter in the air may want to limit time outside Friday and Saturday.

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

New Delhi: After two days of moderate air quality, the air quality in the national capital has again deteriorated, falling ...

For the next six days, the air quality is likely to remain in the 'poor' to 'very poor' category in Delhi and surrounding ...