Worst air pollution Rosslyn - Arlington, today and tomorrow
Today (16 July): Air quality in Rosslyn is fair. NO2 is fair; AQI and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 AM (O3: 48.6/100).
Tomorrow (17 July 2026): Air quality in Rosslyn is fair. All pollutants stay as today. Pollution peaks around 8:00 AM (O3: 51.8/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
Rosslyn, a high-rise business district at the Potomac's edge across from Georgetown, generally reflects Arlington's citywide air quality pattern, shaped by the same regional factors that affect the rest of the area. As with most sublevel sites, the broader city trend is the best guide to typical conditions here.
Today - 16 July | Pollution peaks at 09:00
AQI:
Medium
48.6/100
PM2.5 (fine particles):
Good
17.6/100
PM10 (coarse particles):
Good
15.7/100
NO2 (nitrogen dioxide):
Fair
21.2/100
O3 (ozone):
Medium
48.6/100
SO2 (sulfur dioxide):
Good
4.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.4/100
PM1 (ultrafine particles):
Good
12.3/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 08:00
AQI:
Medium
51.8/100
PM2.5 (fine particles):
Good
17.7/100
PM10 (coarse particles):
Good
10.8/100
NO2 (nitrogen dioxide):
Fair
22.0/100
O3 (ozone):
Medium
51.8/100
SO2 (sulfur dioxide):
Good
3.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.8/100
PM1 (ultrafine particles):
Good
11.6/100
Other Landmarks in Arlington
Frequently Asked Questions
Is air quality bad in Rosslyn right now?
On 16 July 2026, overall air quality in Rosslyn is fair. NO2 is the main pollutant at 21.2/100. Pollution peaks around 9:00 AM (O3: 48.6/100).
Will air quality be worse tomorrow in Rosslyn?
On 17 July 2026, air quality conditions in Rosslyn will be similar to today, with NO2 forecast at fair at 22.0/100. Pollution peaks around 8:00 AM (O3: 51.8/100).
When is air pollution at its worst in Rosslyn?
Rosslyn follows Arlington's typical seasonal air quality pattern: the calmest air of the year usually arrives well after the summer ozone season fades, but hot, humid summer conditions and regional haze drive ozone spikes, especially during heat waves. Dense urban traffic corridors add a persistent background level of pollution that varies less by season than ozone does.
Are air quality levels in Rosslyn 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.
Want to see air quality forecasts for other cities in United States?
Check air quality in other popular cities:
Data provided by Airmine — Last update: 16 July 2026 at 10:33 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.
For long term forecasts and maps, see the Airmine app