Add Yahoo as a preferred source to see more of our stories on Google. The AQI is measured on a scale from 0 to 500, with the lower the number, the healthier the air. (Getty Creative) But many ...

Air quality in Los Angeles has improved as the Palisades and Eaton wildfires get under control. But as the fires burned through houses, cars and industrial areas, they spewed out vast amounts of smoke ...

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“Our monitor caught it immediately,” said Palak Raval-Nelson, Philadelphia public health commissioner. This new Stinger Square Park sensor is part of a network of 76 air quality sensors throughout the ...

The city has installed 76 sensors to track levels of particulate matter and nitrogen dioxide — pollutants that aggravate ...

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 ...

In the heart of Delhi, at a spot popular for picnics in Delhi's crisp winter, a group of protestors are demanding their right to breathe freely. "Why, as a parent, am I being forced to make a choice ...

After fires destroyed multiple neighborhoods across Los Angeles County, many residents looked up to find blue, smoke-free skies this week. The Air Quality Index (AQI) — which measures the ...