What is the air quality trend in Germantown?

Over the past 15 days, Germantown had an average AQI of 60 based on station measurements. The worst day was 2026-07-17 with AQI 168.

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

336h

PM2.5 Station

336h · 4 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	26	26–26	6.2 µg/m³	2h	18
2026-07-21	52	30–73	14.4 µg/m³	24h	30
2026-07-20	68	57–81	20.3 µg/m³	24h	29
2026-07-19	66	37–144	19.8 µg/m³	24h	31
2026-07-18	128	57–157	48.5 µg/m³	24h	32
2026-07-17	168	73–218	98.6 µg/m³	24h	34
2026-07-16	77	53–278	28.9 µg/m³	24h	30
2026-07-15	51	42–81	13.1 µg/m³	24h	32
2026-07-14	40	33–51	9.5 µg/m³	24h	30
2026-07-13	37	29–42	8.8 µg/m³	24h	30
2026-07-12	41	29–49	9.9 µg/m³	24h	29
2026-07-11	43	26–54	10.3 µg/m³	24h	24
2026-07-10	42	28–62	10.6 µg/m³	24h	29
2026-07-09	34	25–40	8.3 µg/m³	24h	30
2026-07-08	38	26–47	9.0 µg/m³	22h	32

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