What is the air quality trend in Williamsburg?

Over the past 8 days, Williamsburg had an average AQI of 80 based on station measurements. The worst day was 2026-07-17 with AQI 148.

How is Williamsburg air quality measured?

Air quality in Williamsburg is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Williamsburg, United States

Name: Williamsburg Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Williamsburg, United States.

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

159h

PM2.5 Station

159h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	46	18–85	11.9 µg/m³	18h	4
2026-07-20	60	33–105	17.1 µg/m³	23h	4
2026-07-19	83	15–300	33.1 µg/m³	22h	3
2026-07-18	93	25–305	40.6 µg/m³	24h	3
2026-07-17	148	81–206	72.0 µg/m³	23h	4
2026-07-16	112	27–208	54.2 µg/m³	24h	3
2026-07-15	55	27–159	15.8 µg/m³	23h	3
2026-07-14	48	48–48	11.6 µg/m³	2h	3

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