Air Quality Index (AQI) | AirNow.gov
Local air quality can affect our daily lives. Like the weather, it can change from day to day. EPA developed the Air Quality Index, or AQI, to make information available about the health effects …
AQI Basics | AirNow.gov
The U.S. Air Quality Index (AQI) is EPA's tool for communicating about outdoor air quality and health. The AQI includes six color-coded categories, each corresponding to a range of index …
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AQI & Health | AirNow.gov
Local air quality can affect our daily lives. Like the weather, it can change from day to day. EPA developed the Air Quality Index, or AQI, to make information available about the health effects …
National Maps | AirNow.gov
The list below shows the areas with the highest NowCast AQI for the current hour. The AirNow system automatically generates this list every hour, based on the areas with the highest …
State AQI | AirNow.gov
Wildfire smoke is impacting air quality in multiple states. Please use the Fire and Smoke map to check on wildfire smoke impacts in your area.
Maps and Data | AirNow.gov
AirNow.gov - Home of the U.S. Air Quality Index Home | Site Map | Contact Us | Accessibility AirNow.gov - Home of the U.S. Air Quality Index Home | Site Map | Contact Us | Accessibility
Using Air Quality Index | AirNow.gov
Use the Air Quality Index (AQI) to learn more about your local air quality and the best times for your outdoor activities.
Air Quality Index Publications | AirNow.gov
Air Quality Index Publication, Air Quality Index - A Guide to Air Quality and Your Health, Air Quality Index, Reporting; Final Rule, Air Quality Guide for Nitrogen Dioxide, Air Quality Guide …
Recent AQI Trends | AirNow.gov
This chart shows the daily AQI in your area for each of the last 30 days. Mouse over or tap a bar to see which pollutant (ozone or PM) was highest that day.