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

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

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

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/

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/

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

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/

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/

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

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

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/

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

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/

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/

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

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

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

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/

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/

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

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

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

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

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

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/

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/

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/

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

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/

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