AIR Web
   Air quality and visibility in U.S. national parks, refuges, and other protected areas. From National Park Service Air Resources Division and Fish and Wildlife Services.
   http://www2.nature.nps.gov/air/

AIRNOW - U.S. EPA
   Air pollution data, ozone forecasting, information about public health and environmental effects of air pollution, and actions you can take to reduce pollution.
   http://airnow.gov/

Air & Waste Management Association (A&WMA )
   Environmental information including air pollution, hazardous waste, management, regulations, measuring, modeling, emissions, testing, monitoring, modeling, particulate matter, ozone, and brownfields
   http://www.awma.org/

Automobile Emissions: An Overview
   U.S. EPA fact sheet. [PDF format]
   http://www.epa.gov/otaq/consumer/05-autos.pdf

Bay Area Air Quality Management District
   The BAAQMD (District) is the regional, government agency that regulates sources of air pollution within the nine San Francisco Bay Area Counties.
   http://www.baaqmd.gov/

California Air Resources Board
   CA air regulations, CA Almanac of Emissions and Air Quality, air emissions modeling, the gasoline additive MTBE, information on reducing air pollution from marine engines, and management of smoke from agricultural burning.
   http://www.arb.ca.gov/homepage.htm

Canada's Toxic Release Inventory
   Information about releases of pollutants into air, water and land. From Environment Canada.
   http://www.ec.gc.ca/pdb/npri/

Chicago Department of Environment
   Gives information on Chicago's air quality and regional pollution prevention programs.
   http://egov.cityofchicago.org/city/webportal/portalEntityHomeAction.do?entityName=Environment&entityNameEnumValue=05

Clean Air Canada
   Up to date information on air quality issues in Canada. Including environmental law and policy, motor vehicle emissions and industrial sources of pollution. Maintained by students at the Environment Law Centre, University of Victoria.
   http://www.cleanair.ca

Clean Air Society of Australia and New Zealand
   Focus is air quality and the mechanics of air pollution. Information about publications, training courses, conferences, and seminars.
   http://www.casanz.org.au

Clean Air Task Force
   A nonprofit organization dedicated to restoring clean air and healthy environments in the United States through scientific research, public education, and legal advocacy.
   http://www.catf.us

Denver Vehicle Emissions Testing Program
   Describes the mandatory vehicle emissions testing program in the Denver-Boulder area of Colorado, including maps to emissions stations, testing requirements, help for failing vehicles and tips to keep from becoming a gross polluter.
   http://www.aircarecolorado.com

DieselNet: Diesel Emissions Online
   Information service on diesel exhaust emissions, emission control technologies, diesel engines, fuels, and related topics.
   http://www.dieselnet.com/

EDF Chemical Scorecard
   Toxic Release Inventory data for the US (emissions of toxic chemicals to air and water). Search for data on toxic chemicals in your community. Also provides information on human health effects.
   http://www.scorecard.org/

EHC Air Quality Program
   National Safety Council's Environmental Health Center (EHC) conducts a variety of outreach and education activities on air quality issues. Topics include indoor air quality, mobile emissions, and radon.
   http://www.nsc.org/ehc/airqual.htm

Environmental Expert.com
   Presents free accessible articles, publications, events, software, technological solutions and web resources for Air Pollution Control.
   http://www.environmental-expert.com/index.asp?level=1

Environmental Software and Modelling Group, Technical University of Madrid
   Conducts research in measurement and modelling of air quality, including air quality prediction.
   http://artico.lma.fi.upm.es

Environmental-Expert.Com
   Environmental site with large up-to-date section on air pollution.
   http://www.environmental-expert.com/

Fuel Efficiency Automobile Test Data Center
   The site contains vehicle emissions databases and reports remotely collected from in-use vehicles since 1987 from around the world. Data sets include cars, light-trucks, heavy-duty trucks, jet aircraft, locomotives and snowmobiles.
   http://www.feat.biochem.du.edu

History of the Clean Air Act
   Recounts the historical development of United States air quality statutes and regulations, including an introduction to the technical concepts involved.
   http://www.ametsoc.org/sloan/cleanair/index.html

Industrial Center's Air Toxics Compliance Consortium
   Information on compliance technologies, vendors, and case studies for toxic air pollutants (as defined in U.S. regulations).
   http://www.energysolutionscenter.org/airtoxic/

Lake Michigan Air Directors Consortium
   Provides technical assessments on ozone and other problems of air quality in Illinois, Indiana, Michigan, and Wisconsin. Data and modeling reports available online.
   http://www.ladco.org

NOAA - Atmospheric Turbulence and Diffusion Division
   National Oceanic & Atmospheric Administration laboratory research activities are divided into three themes: Air Quality, Emergency Preparedness, and Climate Variability. Each encompasses a number of programs and projects.
   http://www.atdd.noaa.gov/

National Vehicle and Fuel Emissions Laboratory - U.S. EPA
   Federal Government's principal program to control air pollution from motor vehicles. Primary responsibilities include developing programs to reduce mobile source related air pollution; evaluating emission control technology; testing vehicles, engines, and
   http://www.epa.gov/nvfel/

Navy Aerosol Analysis and Prediction System (NAAPS)
   Includes global, five day forecasts of dust, smoke and sulfate aerosols as well as comparison with satellite analyses.
   http://www.nrlmry.navy.mil/aerosol/

Netherlands National Air Quality Monitoring Network
   A division of RIVM, National Institute of Public Health and the Environment. Up-to-date, hourly information about air quality in The Netherlands.
   http://www.lml.rivm.nl

New Jersey Department Environmental Protection Bureau of Air Monitoring
   Current air quality and forecasts for New Jersey.
   http://www.state.nj.us/dep/airmon/index.html

Norwegian Institute for Air Research
   A leading centre of expertise in questions related to air pollution. Established in 1969, it is an independent foundation specialized in most issues of air pollution on national and international levels. (Language: Norwegian)
   http://www.nilu.no

Parkland Airshed Management Zone Association
   Provides information about the PAMZ, a non-profit multi-stakeholder organization established to manage and monitor air quality issues in central Alberta, Canada.
   http://www.pamz.org

SEIPH - Environmental Research Group
   Air Quality monitoring networks of London, Bedfordshire, Kent and Hertfordshire in the UK. Near realtime data is available from the site.
   http://www.londonair.org.uk/london/asp/home.asp

State/Local Air Pollution Control Agencies
   The State and Territorial Air Pollution Program Administrators (STAPPA) and the Association of Local Air Pollution Control Officials (ALAPCO) are national associations representing air pollution control agencies in the 54 U.S. states/territories and over
   http://www.4cleanair.org/

Title V Policy and Guidance Database
   EPA has issued a number of policy and guidance documents that interpret Title V and its regulations. This is a free searchable database which contains EPA-issued policy and guidance documents on air operating permits. You can search the database onlin
   http://www.epa.gov/region07/programs/artd/air/title5/title5pg.htm

U.S. Forest Service Air Quality and Smoke Management Pages
   Various materials on air quality and visibility, Forest Service Class I PSD Areas, Integrating Air Quality and Fire Management into Land Management Planning, and smoke and dust from wildland fires.
   http://www.fs.fed.us/clean/air/

UK Air Quality Archive
   Features information on the causes and effects of pollution. Includes forecast bulletin, 24 hour summaries and articles.
   http://www.airquality.co.uk