What is the air quality trend in Silver Spring?

Over the past 8 days, Silver Spring had an average AQI of 79 based on station measurements. The worst day was 2026-07-17 with AQI 169.

How is Silver Spring air quality measured?

Air quality in Silver Spring 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 Silver Spring, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 28 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	24	22–25	5.7 µg/m³	2h	28
2026-07-21	53	27–76	14.8 µg/m³	24h	27
2026-07-20	71	59–104	21.5 µg/m³	24h	26
2026-07-19	73	36–288	27.8 µg/m³	24h	28
2026-07-18	132	58–161	52.3 µg/m³	24h	29
2026-07-17	169	59–220	101.6 µg/m³	24h	30
2026-07-16	64	55–159	18.8 µg/m³	24h	27
2026-07-15	49	15–57	12.2 µg/m³	21h	28

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