What is the air quality trend in Germantown?

Over the past 15 days, Germantown had an average AQI of 46 based on station measurements. The worst day was 2026-07-17 with AQI 79.

How is Germantown air quality measured?

Air quality in Germantown 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 Germantown, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

323h

PM2.5 Station

323h · 3 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	50	43–62	13.0 µg/m³	3h	4
2026-07-21	49	33–66	12.3 µg/m³	20h	3
2026-07-20	53	21–117	14.8 µg/m³	24h	3
2026-07-19	64	15–128	19.7 µg/m³	21h	3
2026-07-18	53	14–149	15.2 µg/m³	24h	3
2026-07-17	79	24–211	30.4 µg/m³	24h	3
2026-07-16	63	22–176	21.9 µg/m³	23h	3
2026-07-15	39	26–53	9.4 µg/m³	23h	4
2026-07-14	37	15–58	8.9 µg/m³	24h	3
2026-07-13	36	24–52	8.5 µg/m³	22h	3
2026-07-12	32	15–54	7.8 µg/m³	24h	3
2026-07-11	35	22–46	8.5 µg/m³	24h	4
2026-07-10	34	24–39	8.1 µg/m³	22h	4
2026-07-09	37	25–53	9.0 µg/m³	24h	4
2026-07-08	34	20–55	8.1 µg/m³	21h	4

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