What is the air quality trend in Williamsburg?

Over the past 15 days, Williamsburg had an average AQI of 40 based on station measurements. The worst day was 2026-08-05 with AQI 76.

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

272h

PM2.5 Station

272h · 4 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-08	13	9–17	3.2 µg/m³	4h	3
2026-08-07	27	2–64	6.6 µg/m³	19h	3
2026-08-06	65	24–130	20.0 µg/m³	17h	2
2026-08-05	76	2–500	73.2 µg/m³	19h	2
2026-08-04	54	2–159	17.1 µg/m³	17h	2
2026-08-03	45	16–132	12.9 µg/m³	18h	2
2026-08-02	33	12–68	8.3 µg/m³	19h	3
2026-08-01	32	13–49	7.6 µg/m³	19h	3
2026-07-31	34	8–76	8.5 µg/m³	19h	2
2026-07-30	35	9–80	9.5 µg/m³	19h	2
2026-07-29	38	8–68	9.5 µg/m³	21h	2
2026-07-28	48	11–75	12.4 µg/m³	23h	2
2026-07-27	42	20–59	10.4 µg/m³	21h	3
2026-07-26	34	1–54	8.3 µg/m³	21h	2
2026-07-25	29	12–49	7.0 µg/m³	16h	2

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