Worst air pollution Washington, today and tomorrow
Today (16 July): Air quality in Washington is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (O3: 28.9/100).
Tomorrow (17 July 2026): Air quality in Washington is fair. All pollutants stay as today. Pollution peaks around 12:00 AM (O3: 29.0/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Rush-hour queues near the A38 are usually when readings climb the most. Being part of Sunderland, Washington sees an air quality profile that's largely down to traffic and general town-centre activity. Northwesterly winds off the coast generally provide reasonable ventilation, keeping levels close to typical UK urban averages for a town this size.
Today - 16 July | Pollution peaks at 23:00
AQI:
Fair
28.9/100
PM2.5 (fine particles):
Good
15.4/100
PM10 (coarse particles):
Good
5.7/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Fair
28.9/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.7/100
PM1 (ultrafine particles):
Good
11.9/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 00:00
AQI:
Fair
29.0/100
PM2.5 (fine particles):
Good
15.5/100
PM10 (coarse particles):
Good
5.9/100
NO2 (nitrogen dioxide):
Good
0.7/100
O3 (ozone):
Fair
29.0/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.0/100
PM1 (ultrafine particles):
Good
11.9/100
Pollen forecast in Washington
View pollen forecastFrequently Asked Questions
Is air quality bad in Washington right now?
On 16 July 2026, overall air quality in Washington is fair. AQI is the main air quality indicator at 28.9/100. Pollution peaks around 11:00 PM (O3: 28.9/100).
Will air quality be worse tomorrow in Washington?
On 17 July 2026, air quality conditions in Washington will be similar to today, with AQI forecast at fair at 29.0/100. Pollution peaks around 12:00 AM (O3: 29.0/100).
When is air pollution at its worst in Washington?
There's a clear yearly cycle to air quality in Washington if you look closely. By summer, ozone tends to rise on bright days, while better ventilation generally keeps particulate and NO₂ levels lower than winter. Come winter, NO₂ and PM2.5 usually creep up, as heating and calmer air let A38 traffic emissions linger rather than disperse. The shoulder seasons generally bring the mildest readings of the year.
Are air quality levels in Washington 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.
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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