What is the air quality trend in Fort Washington?

Over the past 8 days, Fort Washington had an average AQI of 26 based on station measurements. The worst day was 2026-10-14 with AQI 42.

How is Fort Washington air quality measured?

Air quality in Fort Washington 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 Fort Washington, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 22 stations

Temperature GFS model

27pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	28	26–29	6.6 µg/m³	4h	20
2026-10-20	23	18–28	5.5 µg/m³	24h	19
2026-10-19	25	17–31	6.0 µg/m³	24h	21
2026-10-18	19	15–29	4.6 µg/m³	24h	18
2026-10-17	15	11–23	3.6 µg/m³	24h	20
2026-10-16	29	16–48	7.0 µg/m³	24h	20
2026-10-15	30	19–54	7.2 µg/m³	24h	21
2026-10-14	42	34–48	10.0 µg/m³	17h	20

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