Air Quality Data - United States

Local air quality indices are compiled here in a comprehensive list of links to air quality monitoring sites around the U.S. For convenience, states (and the District of Columbia) are listed alphabetically. Depending on the location, each site reports air quality based on ozone and particulate levels, however many sites also monitor for carbon monoxide, SOx, NOx lead and other air toxics. EPA AIRNOW acts as a clearinghouse for local air quality monitoring sites across the U.S., but the national site does not provide the complete data collected from every locality. More detailed reports spanning longer time periods for all 50 states and U.S. territories can be obtained from the EPA Office of Air and Radiation's AirData Program.

By States:

Alabama

• Department of Environmental Management, Air Division, Ozone Forecast
• Environmental Monitoring for Public Access and Community Tracking (EMPACT) - Birmingham

Alaska

• Fairbanks North Star Borough, Department of Transportation, Air Quality Program

Arizona

• AIRNOW
• EMPACT, Real-time access to data for the Green Valley community
• Pima County Department of Environmental Quality, Air Info Now
• Pinal County Government, Air Quality Information

Arkansas

• Department of Environmental Quality, Air Division, Planning and Air Quality Analysis Branch

California

• EPA, Air Resources Board, Air Quality Information
• AIRNOW (CA)
• Antelope Valley Air Quality Management District, Daily Air Quality Report
  
• Bay Area Air Quality Management District
  
• Bay Area daily air quality forecast
  
• Butte County Air Quality Management District
  
• Colusa County Air Quality Control District
  
• County of San Diego, Air Pollution Control District
  
• Mojave Desert Air Quality Management District
  
• Monterey Bay Unified Air Pollution Control District
  
• Sacramento Metropolitan Air Quality Management District
  
• San Joaquin Valley Air Pollution Control District, Air Quality Info.
  
• San Luis Obispo County Air Pollution Control District, Weekly Ozone Report
  
• Santa Barbara County Air Pollution Control District, AQI
  
• South Coast Air Quality Management District
  
• Ventura County Air Pollution Control District

Colorado

• Department of Public Health and the Environment, Air Pollution Control Division, Air Quality Index

Connecticut

• Department of Environmental Protection Air Quality Index

Delaware

• Department of Natural Resources and Environmental Control, Division of Air and Waste Management, Statewide Monitoring Network (Ozone data only)

District of Columbia

• Metropolitan Washington Council of Governments, AQI
• AIRNOW (DC)

Florida

• Department of Environmental Protection, Division of Air Resource Management
  
• AIRNOW (FL)

Georgia

• Department of Natural Resources Ambient Monitoring Program
  
• Clean Air Campaign of Georgia, Air Quality Index

Great Lakes

• Information Network

Hawaii

• Air Quality Forecasts

Idaho

• Department of Environmental Quality, Air Quality Division

Illinois

• Environmental Protection Agency, Air Quality Index

Indiana

• Department of Environmental Management, Office of Air Quality, Air Monitoring Branch - Ambient Monitoring

Iowa

• Department of Natural Resources, Air Quality Bureau, Urban Air Monitoring

Kansas

• EPA AIRNOW, Data Courtesy of Kansas Department of Health and Environment

Kentucky

• Department for Environmental Protection, Division for Air Quality, Air Quality Index
  

Louisiana

• Department of Environmental Quality, Ozone Action Program

Maine

• Department of Environmental Protection, Bureau of Air Quality Daily Forecast

Maryland

• Department of the Environment, Air and Radiation Administration's AirWatch Program - Real Time Ozone Forecast

Massachusetts

• Department of Environmental Protection, Bureau of Waste Prevention Air Program Planning Unit Daily Air Quality Forecast
  
• Real-time air quality information for Boston (EMPACT)

Michigan

• Department of Environmental Quality, Air Quality Index
  
• Southeast Michigan Council of Governments - Ozone Action

Minnesota

• Air Pollution Control Agency, Air Quality Index

Missouri

• Department of Natural Resources, Environmental Services Program, Air Quality Monitoring

Montana

• AIRNOW
  
• Yellowstone County Air Pollution Control

Nevada

• AIRNOW

New Hampshire

• Department of Environmental Services, Air Resources Division Current Air Quality Data

New Jersey

• Department of Environmental Protection Bureau of Air Monitoring

New Mexico

• Los Alamos National Laboratory, Risk Reduction and Environmental Stewardship Program, Near Real-Time Particulate Data

New York

• State Department of Environmental Conservation, Division of Air Resources Near Real Time Air Monitoring Data

North Carolina

• Department of Environment and Natural Resources, Division of Air Quality, Ozone Forecast Center
  

Ohio

• Environmental Protection Agency, Division of Air Pollution Control, AIROHIO (EMPACT)
• Regional Air Pollution Control Agency (RAPCA) serving Clark, Darke, Greene, Miami, Montgomery, and Preble Counties, AQI
• Northeast Ohio Areawide Coordinating Agency (NOACA), Ohio University, Texas A&M University - Kingsville (EMPACT), Northeast Ohio Air Quality Online

Oklahoma

• Department of Environmental Quality, Air Quality Index

Oregon

• Department of Environmental Quality, Air Quality Division, AQI

Pennsylvania

• Department of Environmental Protection Air Quality Index Reports

Rhode Island

• Department of Environmental Management/Office of Air Resources Ozone Forecast

South Carolina

• Department of Health and Environmental Control, Bureau of Air Quality, Ozone Forecast

Tennessee

• Department of Environment and Conservation, Division of Air Pollution Control, Tennessee Ozone Forecasting Program
• Chattanooga-Hamilton County Air Pollution Control Bureau

Texas

• Natural Resource Conservation Commission, Air Quality Index and Ozone Maps

Utah

• Department of Environmental Quality, Division of Air Quality, Air Quality Index

Vermont

• Department of Environmental Conservation, Air Pollution Control Division Real-time Data

Virginia

• Department of Environmental Quality, Ozone Monitoring

Washington, D.C.

• Metropolitan Washington Council of Governments, AQI
• AIRNOW (DC)

Washington

• Department of Ecology Air Quality Program
• The Spokane County Air Pollution Control Authority (SCAPCA), AQI
  

West Virginia

• AIRNOW

Wisconsin

• Department of Natural Resources Air Management Program

Wyoming

• Department of Environmental Quality, Visibility Monitoring Network

Additional Links:

U.S. Senate

U.S. House of Representatives

EPA - Learn more about where you live

The American Lung Association

Housing and Urban Development E-Maps

Environmental Defense - Get the facts on local pollution

Tailpipe Tally - How much does your vehicle pollute?

Environmental Media Services