Worst air pollution Ballston - Arlington, today and tomorrow
Today (9 August): Air quality in Ballston is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 32.4/100).
Tomorrow (10 August 2026): Air quality in Ballston is fair. All pollutants stay as today. Pollution peaks around 9:00 AM (O3: 36.0/100). Airmine updates local air quality forecasts four times daily.
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Air quality at Ballston, a mixed-use urban village along the Metro's Orange Line, generally follows the pattern seen across Arlington, shaped by the same local and regional factors. As with most sublevel sites, the broader city trend is the best guide to typical conditions here.
Today - 9 August | Pollution peaks at 12:00
AQI:
Fair
32.4/100
PM2.5 (fine particles):
Good
10.0/100
PM10 (coarse particles):
Good
3.7/100
NO2 (nitrogen dioxide):
Good
6.1/100
O3 (ozone):
Fair
32.4/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.4/100
PM1 (ultrafine particles):
Good
7.0/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 09:00
AQI:
Fair
36.0/100
PM2.5 (fine particles):
Good
9.0/100
PM10 (coarse particles):
Good
3.7/100
NO2 (nitrogen dioxide):
Good
2.8/100
O3 (ozone):
Fair
36.0/100
SO2 (sulfur dioxide):
Good
1.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.3/100
PM1 (ultrafine particles):
Good
5.8/100
Other Landmarks in Arlington
Frequently Asked Questions
Is air quality bad in Ballston right now?
On 9 August 2026, overall air quality in Ballston is fair. AQI is the main air quality indicator at 32.4/100. Pollution peaks around 12:00 PM (O3: 32.4/100).
Will air quality be worse tomorrow in Ballston?
On 10 August 2026, air quality conditions in Ballston will be similar to today, with AQI forecast at fair at 36.0/100. Pollution peaks around 9:00 AM (O3: 36.0/100).
When is air pollution at its worst in Ballston?
Air quality at Ballston shifts across the year — the cleanest stretch of the year usually comes in winter, whereas the hottest, most humid summer weeks bring the year's highest ozone readings. Suburban and rural areas generally see less of the persistent traffic-driven pollution that affects the urban core.
Are air quality levels in Ballston based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 10 August 2026 at 02:34 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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