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 ...

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 ...

According to data from the Central Pollution Control Board, the Air Quality Index remained in the ‘very poor' category at ...

When air quality is poor, fine particulate matter (PM 2. 5, PM10), nitrogen dioxide, and other contaminants can travel deeper ...

Delhi is grappling with hazardous air quality, with Anand Vihar recording a 'severe' AQI of 442. Dense fog has also disrupted ...

Delhi recorded a thick blanket of smog on December 15, 2025, with the Air Quality Index (AQI) settling at 450, according to the Air Quality Early Warning System (AQEWS) for Delhi at 11 am, which falls ...

Delhi air pollution worsens as AQI stays in the ‘very poor’ category today. Check area-wise air quality levels and pollution ...