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 …

This booklet explains EPA's Air Quality Index (AQI) and the health effects of major air pollutants. You may need a PDF reader to view files on this page. See EPA’s About PDF page to learn more.

What is the AQI? The AQI is an index for reporting daily air quality. It tells you how clean or unhealthy your air is, and what associ-ated health efects might be a concern. The AQI focuses on health efects you may experience within a few hours or days after breathing unhealthy air.

Use AirNow’s (www.airnow.gov) current Air Quality Index (AQI) information and forecasts to plan your outdoor activities. What is particle pollution? Particle pollution comes from many different sources.

Nov 26, 2024 · Use the map to see current particle pollution information for your location, fire and smoke locations, Smoke Forecast Outlooks, and to learn what actions you can take to reduce the amount of smoke you breathe in. The U.S. Air Quality …

EPA and local officials use the AQI to provide die public with timely and easy- to-understand information on local air quality and whedier air pollution levels pose a health concern., This booklet tells you about the AQI and how it is used to provide air quality information.

The Air Quality Index (AQI) is used for reporting daily air quality. It tells you how clean or polluted your air is, and what associated health effects might be a concern for you. The AQI focuses on health effects you may experience within a few hours or days after breathing polluted air.

Ground-level ozone is one of our nation’s most common air pollutants. Use the chart below to help reduce your exposure and protect your health. Visit AirNow.gov for your local air quality forecast (www.airnow.gov). Who Needs to be Concerned? What Should I Do? It’s …

Jan 13, 2025 · This report provides Air Quality Index annual summary information, including maximum AQI values and the count of days in each AQI category. Read more about what's in this report. Use the query tool below to get AQI reports for one state, county, or CBSA at a time.

The Air Quality Index, or AQI, is the system used to warn the public when air pollution is dangerous. The AQI tracks ozone (smog) and particle pollution (tiny particles from smoke, power plants and factories, vehicle exhaust, and other sources), …