Smoke from wildfires in Canada has drifted into the U.S., prompting air quality alerts for Americans as it continues to spread. But when officials and forecasters classify a city's air as "unhealthy" ...

The AQI is measured on a scale from 0 to 500, with the lower the number, the healthier the air. (Getty Creative) But many Angelenos aren’t sure if the AQI tells the full story, especially given how ...

Smoke from Canadian wildfires has impacted the air quality throughout United States, including in the northern High Plains, Midwest, Great Lakes, southern Mid-Atlantic and into the Northeast. This has ...

NEW YORK (WABC) -- The Air Quality Index is a scale used for daily reporting of how clean or polluted the air is, and what health effects might be of concern. The AQI focuses on what you might ...

Air quality levels in parts of Canada and the US have nosedived in recent days as winds have carried smoke from wildfires in Quebec and Nova Scotia across the continent. Things are bad enough that New ...

This week, millions of Americans are anxiously scanning air quality maps focusing on two colors: red and purple. Red indicates "unhealthy" air quality, and purple? "Very unhealthy." When did purple ...

After wildfires burn through urban areas, publicly available air quality assessments may not adequately warn people about harmful air pollutants. Expanding today’s air quality metrics requires more ...

Local organisations from Gurugram and Faridabad petition the CPCB to upgrade its calculation method in line with WHO ...

Social media was flooded with screenshots showing Air Quality Index (AQI) figures touching, and even crossing, 1000 at ...