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.
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.
Using the Air Quality Index - AirNow
Use the Air Quality Index (AQI) to learn more about your local air quality and the best times for your outdoor activities.
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 of the five most common air pollutants, and how to avoid those 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 values. The higher the AQI value, the greater the level of …
System Alerts | AirNow.gov
2023年8月1日 · 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.
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.
AirNow Fire and Smoke Map
Smoke plumes reflect smoke anywhere in the atmosphere, not necessarily near the ground. As such, they may not be associated with bad air quality.
AQI Calculator | 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.