The Air Quality Index (AQI) uses a color-coded scale to inform the public about air pollution levels and potential health ...

The U.S. Air Quality Index (AQI) is the Environmental Protection Agency’s tool for reporting outdoor air quality and health.

Delhi-NCR reimposes Stage-I GRAP measures as the Air Quality Index (AQI) deteriorates, reaching the 'Poor' category at 209.

MORPC issues Air Quality Alert for Columbus due to wildfire smoke. AQI “Unhealthy for Sensitive Groups.” Limit outdoor ...

An air quality alert remains in effect for the entire Chicago area, with another "Air Pollution Action Day" alert declared as ...

As wildfires continue to rage in western Canada, the Environmental Protection Agency issued its first alert of the year for ...

A pulmonologist recommends limiting outdoor exposure to minutes when AQI exceeds 150, and notes smoky conditions from ...