EPA developed the Air Quality Index, or AQI, to make information available about the health effects of the five most common air pollutants, and how to avoid those effects. The Air Quality …

To go back, click on the AirNow tab or the AirNow logo. “Ozone and PM” refers to data for Ozone plus PM2.5 plus PM10. Each hour, the highest NowCast AQI among these 3 pollutants is …

AirNow reports current and next-day forecasts for AQI conditions for over 400 cities, as well as nationwide and regional real-time ozone and particle pollution air quality maps, updated …

AirNow is a one-stop source for air quality data. AirNow reports air quality using the official U.S. Air Quality Index (AQI), a color-coded index designed to communicate whether air quality is …

Every day the Air Quality Index (AQI) tells you how clean or polluted your outdoor air is, along with associated health effects that may be of concern. Local air quality affects how you live and …

EPA's AirNow mobile app provides a simple interface for quickly checking current and forecast air quality information for planning daily activities and protecting your health.

Dec 8, 2025 · The app will allow users to get location-specific reports on current air quality and air quality forecasts for both ozone and fine particle pollution (PM2.5).

Feb 27, 2025 · The AIRNow mobile application provides you real-time air quality information that you can use to protect your health when planning your day. You can get location-specific …

Nov 5, 2025 · Use the map to see current particle pollution information for your location, fire and smoke locations, Smoke Forecast Outlooks, and to learn what actions you can take to reduce …

Our website and app highlights air quality in your local area first, while still providing air quality information at state and national views. AirNow’s interactive map even lets you zoom out to …