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) 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
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.
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 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
Action Days | AirNow.gov
In many places, action days are called when the AQI is forecast to be Unhealthy, or Code Red. In this case, everyone should reduce exposure to air pollution, but especially the members of the sensitive group for the particular pollutant. What You Can Do.
System Alerts | AirNow.gov
Air Quality Flag Program Air Quality Flag Program (En Español) What You Can Do Information for: Teachers Students Health Professionals International U.S. Embassies and Consulates Canada Mexico
State AQI | AirNow.gov
Air Quality Flag Program Air Quality Flag Program (En Español) What You Can Do Information for: Teachers Students Health Professionals International U.S. Embassies and Consulates Canada Mexico
Smoke Advisories | AirNow.gov
South Coast Air Quality Management District; Ventura County Air Pollution Control District; Colorado. Colorado Wildfire Smoke Health Advisories; Idaho. Idaho Department of Environmental Quality; Wildfire Smoke Information; Idaho Smoke Information Blog; Montana. Wildfire Smoke Outlook; North Carolina. North Carolina Air Quality Alerts and Health ...
Air Quality Flag Program Main Page | AirNow.gov
Here's how the Air Quality Flag Program works: each day your organization raises a flag that corresponds to how clean or polluted the air is. The color of the flag matches EPA's Air Quality Index (AQI): green, yellow, orange, red, and purple.