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 …
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 …
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 …
National Maps | AirNow.gov
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 …
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 …
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 …
AirNow Fire and Smoke Map
This map shows fine particle pollution (PM2.5) from wildfires and other sources. It provides a public resource of information to best prepare and manage wildfire season. Developed in a …
Using the Air Quality Index - AirNow
What it is: The U.S. Air Quality Index, or AQI, is EPA’s tool for communicating daily air quality. It uses color-coded categories and provides statements for each category that tell you about air …
State AQI | AirNow.gov
Wildfire smoke continues to impact air quality in multiple states. Please use the Fire and Smoke map to check on wildfire smoke impacts in your area.
This guidance is designed to aid local agencies in reporting air quality using the U.S. Air Quality Index as required in 40 CFR Part 58.50 and according to 40 CFR Appendix G to Part 58. I. …