AirNow.gov
AirNow is your one-stop source for air quality data. Our recently redesigned site highlights air quality in your local area first, while still providing air quality information at state, national, and world views.
National Maps | AirNow.gov
Because air quality can change during the day, the areas on this list may change throughout the day, too. Note: This list is not used for regulatory purposes, and it does not indicate an area’s status in meeting National Ambient Air Quality Standards.
About AirNow | AirNow.gov
Our recently redesigned site highlights air quality in your local area first, while still providing air quality information at state, national, and world views. A new interactive map even lets you zoom out to get the big picture or drill down to see data for a single air quality monitor.
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 of the five most common air pollutants, and how to avoid those effects.
Air Quality Index (AQI) Basics - AirNow
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 values. The higher the AQI value, the greater the level of …
AirNow Mobile App
The app automatically displays the current AQI (Air Quality Index) for your local area or any area you wish to check, and allows you to store multiple areas for quick reference. The app also includes the AirNow Fire and Smoke map, which the EPA produced in …
Using the Air Quality Index - AirNow
What it is: The NowCast AQI shows your current air quality using the AQI colors and scale. Who issues it: EPA uses two algorithms, called “NowCasts,” to relate hourly readings from air quality monitors to the AQI for ozone and the AQI for particle pollution.
US Embassies and Consulates | AirNow.gov
AirNow and the U.S. Department of State collects Air Quality Monitoring data from U.S. embassies and consulates around the world to inform U.S. personnel and citizens overseas.
AirNow Fire and Smoke Map
This map shows fine particle pollution from wildfires and other sources. It does not show air toxics or other pollutants. For ozone, go to AirNow . Learn more about this map
Using AirNow During Wildfires
You can choose to see air quality at monitors for ozone, PM 2.5 and/or PM 10. You also have the option in the interactive map to view air quality "contours," which are developed using data from multiple monitors in an area.