Air Quality Index (AQI) - AirNow
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.
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 …
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 …
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 …
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 …
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 …
AQI Basics in Spanish | AirNow.gov
El AQI incluye seis categorías codificadas por colores, cada una corresponde a un rango de los valores del índice. Cuanto más alto es el valor del AQI, mayor es el nivel de contaminación …
Maps and Data - AirNow
Smoke from several wildfires in the Los Angeles, California area is affecting air quality in portions of the state. Check the AirNow Fire and Smoke Map for local air quality conditions, fire …
What is the AQI? - AirNow
The Air Quality Index uses numbers from 0 to 500. These numbers are used to decide the AQI color. On days measuring less than 100, the air is clean. If the air is dirtier, the numbers get …
State AQI | AirNow.gov
The U.S. Environmental Protection Agency and the U.S. Forest Service are pleased to bring you this updated AirNow Fire and Smoke Map, with even more information you ...