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.

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 locations and smoke plumes.

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.

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 …

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.

2018年2月14日 · 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 locations and smoke plumes.

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.

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

Green is the best air quality. When the AQI is green,the air is clean! We see a lot of Yellow, Orange, and Red AQI colors in the summer when air quality often isn't at its best. Purple and Maroon are the worst air quality! Luckily we hardly ever see the AQI get to Purple.

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 locations and smoke plumes.