Division of Environmental Health

CONTACT INFORMATION: Our Environmental Health Services office at 10777 Main Street in Fairfax is open during regular business hours 8 a.m. - 4:30 p.m., Monday - Friday. Clinic services are not offered at this location.
703-246-2201 TTY 711
10777 Main Street
Fairfax, VA 22030
Pieter A. Sheehan, REHS
Director, Division of Environmental Health

Air Quality

June 2023 Air Quality Information

Due to wildfires across multiple regions in Canada, air quality in Fairfax County and the region is unhealthy for everyone. See the latest alerts and updates from Fairfax County.

The biggest health threat from wildfire smoke is from fine particles. These small particles can get into your eyes and respiratory system, where they can cause health problems including: coughing, trouble breathing normally, stinging eyes, scratchy throat, runny nose, irritated sinuses, wheezing and shortness of breath, chest pain, headache, asthma attack, tiredness, and fast heartbeat.

Wildfire smoke can make anyone sick, even healthy people. Some people may be more likely to get sick, including:

  • People with heart or lung disease, including asthma and chronic obstructive pulmonary disease (COPD) 
  • Children and teenagers
  • Older adults
  • People who are obese or have diabetes might be at increased risk. 
  • New or expectant mothers may also want to take precautions to protect the health of their babies.

Steps you can take 

Air quality levels are expected to change over the next several days. Local conditions can change rapidly. Stay up to date on the air quality in our community and take the recommendation actions: see real time data from AirNow.gov and Current Air Quality and Forecast from Virginia DEQ

You can also: 

  • Consider wearing an N95 respirator while outdoors. Cloth masks or “dust” masks trap large particles, but will not protect your lungs from smoke. An “N95” mask (respirator), properly worn, will offer some protection.
  • If you are advised to stay indoors, keep indoor air as clean as possible.
  • Watch pets and livestock closely for symptoms and takes steps to reduce their exposure.

Contact your healthcare provider if you have trouble breathing, shortness of breath, cough that won’t stop, or other symptoms that do not go away. Call 9-1-1 or go right away to an emergency department for medical emergencies.

The Health Department is monitoring ER and Urgent Care visit trends for asthma and other air quality-related respiratory conditions to maintain awareness of how this event is impacting the community.

Air Quality Guide for Particle Pollution
Air Quality Guide for Particle Pollution from AirNow.gov

Additional Resources from the CDC: Protect Yourself from Wildfire Smoke | Particle Pollution

There are few things in life as important as the air we breathe. Because there are many sources of outdoor and indoor air pollution that can have short and long-term effects on our health, it’s important that we take steps to minimize our risk and improve the quality of our air. This page provides information and resources on indoor and outdoor air quality as well as daily forecasts of air quality in Fairfax County and the region.

For more tools and information to help you learn about air quality, visit the Metropolitan Washington Council of Governments Air Quality Forecast page.

Air Quality Forecasts

Air Quality Index (AQI) tells you how clean or polluted your air is, and what associated health concerns you should be aware of. The AQI focuses on health effects that can happen within a few hours or days after breathing polluted air. The AQI is a system which uses five major air pollutants regulated by the Clean Air Act: particulate matter, sulfur dioxide (SO2), carbon monoxide (CO), ozone (O3), and nitrogen dioxide (NO2). For each of these pollutants, EPA has established national air quality standards to protect against harmful health effects. The Commonwealth of Virginia, Department of Environmental Quality is responsible for monitoring the air quality and reporting daily air quality levels to the public. They provide this air quality forecasting information on their website.

The Metropolitan Washington Council of Governments (C.O.G.) is responsible for reporting daily air quality levels to the public in this region. C.O.G. collects air quality data from selected monitoring stations on a daily basis from the District of Columbia, Maryland and Virginia. They provide this air quality forecast information on their website. When the index exceeds or will probably exceed 100, and when specific weather conditions exist, C.O.G. may issue a Health Advisory.

For daily AQI forecasts, call the Air Quality Hotline at 202-589-1212, TTY 711.

Clean Air Tips

When particle pollution levels are high, take steps to limit the amount of air you breathe in while you're outside and to do your part to reduce air pollution. For example:

  • Think about spending more time indoors, where particle pollution levels are usually lower.
  • Choose easier outdoor activities (like walking instead of running) so you don't breathe as hard.
  • Avoid busy roads and highways where PM is usually worse because of emissions from cars and trucks.
  • Limit driving and when possible, combine trips, telework, carpool or use mass transit, including Fairfax Connector.
  • Refuel vehicles after dusk and limit idling. Exhaust contains particle pollution that makes air quality worse on hot days.
  • Avoid mowing lawns with gasoline-powered motors.
  • Turn off lights and electronics when not in use. 
  • Keep air conditioning no lower than 78 degrees.

For more tools to help you learn about air quality, see Outdoor Air.


Fairfax Virtual Assistant