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.
Air Quality Index (AQI) | AirNow.gov
The Air Quality Index (AQI) tells you how clean or polluted your outdoor air is and the associated health effects that may be of concern.
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 …
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 NowCast AQI for ozone or particle pollution. Because air quality can change during the day, the areas on this list may change throughout the day, too.
About AirNow | AirNow.gov
AirNow reports air quality using the official U.S. Air Quality Index (AQI), a color-coded index designed to communicate whether air quality is healthy or unhealthy for you. When you know the AQI in your area, you can take steps to protect your health.
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.
What Is the AQI? - AirNow.gov
Information for students. The EPA and your State environmental agency measure pollution in the air. Then they use the Air Quality Index, or AQI, to tell the people about the air. An index can be a quick way to tell people how good or bad something is. The AQI uses colors, and numbers, and words to tell you about the air.
State AQI | AirNow.gov
Interactive Map National Maps Fire and Smoke Map Using AirNow During Wildfires Information by state Past Data By City By Monitor U.S. Embassies & Consulates AirData AirCompare Developers/API AirNow Mobile App. ... Air Quality Flag Program Air Quality Flag Program (En Español) What You Can Do Information for: Teachers Students Health ...