Worst air pollution Williamsburg, today and tomorrow
Today (16 July): Air quality in Williamsburg is fair. PM2.5 is fair; AQI, NO2, and O3 are medium; PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 44.7/100).
Tomorrow (17 July 2026): Air quality in Williamsburg is fair. AQI worsens to fair; NO2 increases to fair; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 1:00 PM (O3: 38.5/100). 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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Williamsburg's air quality in Virginia benefits from the flat Coastal Plain position between the James and York rivers, with vehicle emissions from I-64 and Colonial Williamsburg's tourism traffic contributing local sources. The tidal rivers and Chesapeake Bay maritime influence provide periodic ventilation, while the surrounding Virginia colonial and national park character maintains relatively low industrial emissions and good baseline conditions throughout most of the year.
Today - 16 July | Pollution peaks at 12:00
AQI:
Medium
44.7/100
PM2.5 (fine particles):
Fair
29.1/100
PM10 (coarse particles):
Good
15.2/100
NO2 (nitrogen dioxide):
Medium
40.8/100
O3 (ozone):
Medium
44.7/100
SO2 (sulfur dioxide):
Good
9.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.2/100
PM1 (ultrafine particles):
Good
19.3/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Fair
38.5/100
PM2.5 (fine particles):
Fair
27.1/100
PM10 (coarse particles):
Good
11.6/100
NO2 (nitrogen dioxide):
Fair
31.7/100
O3 (ozone):
Fair
38.5/100
SO2 (sulfur dioxide):
Good
13.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.3/100
PM1 (ultrafine particles):
Good
15.7/100
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Frequently Asked Questions
Is air quality bad in Williamsburg right now?
On 16 July 2026, overall air quality in Williamsburg is fair. PM2.5 is the main pollutant at 29.1/100. Pollution peaks around 12:00 PM (O3: 44.7/100).
Will air quality be worse tomorrow in Williamsburg?
On 17 July 2026, air quality conditions in Williamsburg will be similar to today, with AQI forecast at fair at 38.5/100. Pollution peaks around 1:00 PM (O3: 38.5/100).
When is air pollution at its worst in Williamsburg?
Williamsburg follows a fairly predictable seasonal air quality pattern — the cleanest stretch of the year usually comes in winter, whereas hot, humid summer conditions and regional haze drive ozone spikes, especially during heat waves. Suburban and rural areas generally see less of the persistent traffic-driven pollution that affects the urban core.
Are air quality levels in Williamsburg 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