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 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 Air Quality Index (AQI) is used by various government agencies to report how clean or polluted the air is in your area. For example, you may have spotted this metric popping up in local weather ...

If you live in regions like North India or cities like Delhi, what dominates concerns for every individual and family November onwards is the worsening AQI. Air Quality Index (AQI) numbers dominate ...

It is wildfire season, which could mean more air pollution, too. Here are a few tips to protect yourself. By Adeel Hassan and Hilary Howard Wildfires burning across Canada are generating clouds of ...

Firefighters work inside a burned structure. After California’s Eaton fire was suppressed in January, invisible gases continued to permeate the air, exposing residents and first responders to ...

We've seen over the past couple of years, major wildfires can have *** big impact on air quality and sometimes bad air quality isn't always obvious. Meteorologist Heather Waldman tells you how to ...

India’s air-quality crisis is deepened by unreliable data. Air quality measurement standards are looser than in places like the U.S., so that “moderate” readings often mask dangerous pollution levels.