Learn what the air quality index (AQI) means, how it impacts your health, and how to stay safe when pollution is high.

The air quality index (AQI) in many LA regions looks good, but that doesn't mean the air is safe. Why it matters: The AQI in ...

Think back to the red AQI forecast on your phone. What information was it trying to convey? The Air Quality Index (AQI) is a ...

The Air Quality Index, set by the Environmental Protection Agency, is your guide to how bad the air quality is outdoors. The ...