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Air Quality Forecasting

Email: Dan Salkovitz or Kristen Stumpf or Mike Kiss

Current estimated air quality index and forecasts by region

Forecast discussion

The Virginia Department of Environmental Quality (DEQ) air quality forecast webpage remains fully functional. However, if information access should become unavailable, air quality forecasts and current conditions may be found at AirNow. In addition, air quality data requests may be made to Namita Verma at the DEQ Office of Air Monitoring,

Forecasts updated July 19, 2019 2:43 pm EDT.

Region Current conditions
as of July 21, 2019 11:40 pm EDT
Forecast for July 21, 2019 Forecast for July 22, 2019
Estimated Air Quality Index Primary
Forecast Primary
Forecast Primary
Richmond Good - 25 O3 Good O3 Good O3
Hampton Roads Good - 25 O3 Good O3 Good O3
Northern Virginia Moderate - 51 PM2.5 Moderate O3 Moderate O3
Roanoke Good - 30 PM2.5 Good O3 Good O3
Winchester Moderate - 54 PM2.5 Moderate PM2.5 Moderate PM2.5

Air Quality Index

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You can also receive updates for the Washington, DC metro area from EnviroFlash.

Air Quality History - Ozone at Unhealthy Levels

About Air Quality

Virginia DEQ monitors level of ozone and particle pollution from stations around Virginia. Both of these are pollutants that, at high levels, may raise health concerns in some people.

Ground-level ozone is the main ingredient in smog. It is a colorless gas formed by the reaction of sunlight with vehicle emissions, gasoline fumes, solvent vapors, and power plant and industrial emissions. Ozone formation is most likely in hot, dry weather when the air is fairly still.

Particle pollution monitoring is now available on the web for select areas in Virginia. Particle pollution is made up of particles found in soot, dust, smoke, and fumes. The burning of coal, oil, diesel, and other fuels produces these particles. The particles are small enough to enter deep into the lungs and cause health problems.

Ozone and particle pollution have been linked to short-term health concerns, particularly among children, asthmatics, people with heart or lung disease, and older adults. The effects of these pollutants can be minimized by avoiding strenuous activity or exercise when levels are high. You can use the forecast for the following day to plan your activities during the summer months. More information on the health effects of air pollutants is available from AirNow.

What Can I Do?

For More Information...

Regional Air Quality Action Programs

PLEASE NOTE: This data has not been verified by the Virginia DEQ and may change. This is the most current data, but it is not official until it has been certified by our technical staff. Data is collected from Virginia DEQ ambient monitoring sites and may include data collected by other outside agencies. This data is updated hourly. All times shown are in local standard time unless otherwise indicated.