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 ...

In recent days, the air quality index has been at "Unhealthy" levels in New York City from the Canadian wildfires smoke. People have been warned to avoid outdoor physical activities. Those who spend ...

With smoke from Canadian wildfires triggering air quality alerts in more than a dozen U.S. states, millions of Americans have suddenly become intimately familiar with the Air Quality Index, or AQI, a ...

Air Quality Index, or AQI, and PM2.5, particulate matter which measures 2.5 micrometers or less, are not the same thing. But both do refer to how polluted the air is, just in different ways. AQI, an ...

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 ...

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 ...

Delhi experienced a welcome improvement in air quality on Saturday after heavy rains and strong winds cleared the haze, with ...

On Wednesday, Delhi-NCR was engulfed by a dense layer of smog, as the Air Quality Index soared to 341, marking it as 'very ...

Mumbai experienced a significant decline in air quality, with the Air Quality Index (AQI) reaching 144, following a brief period of improvement after recent rains. On January 1 and 2, the AQI was much ...

Mumbai’s air quality deteriorated sharply on Thursday morning, with the city’s overall Air Quality Index (AQI) entering the ...

An AQI of 375 means that the air is Hazardous. If it is Good or Satisfactory, normal outdoor activity is fine. For Moderate or higher, sensitive groups (children, elderly, people with heart/lung ...

Data updated at 8:30 am on January 17 showed the overall AQI in Mumbai at 210, classified as Severe under the US AQI scale.