PHILADELPHIA (WPVI) -- With smoke blowing into the Philadelphia region from the wildfires in Canada, you may have heard a lot about the Air Quality Index or AQI. But what it is, exactly? The Air ...

Residents can monitor air quality through resources like the MiAir Quality Index Dashboard and AirNow. The Air Quality Index (AQI) uses a color-coded system to inform the public about air quality ...

In this breaking news update, the focus is on the deteriorating air quality in the national capital, Delhi. The Air Quality ...

Delhi's air quality has worsened, slipping back into the 'very poor' category after a brief improvement. Several monitoring ...

Delhi Air Quality update: Air pollution woes continued to plague Delhi as the city’s air quality slumped back to the ‘very ...