What is the air quality trend in Sammamish?

Over the past 3 days, Sammamish had an average AQI of 80 based on station measurements. The worst day was 2026-08-06 with AQI 92.

How is Sammamish air quality measured?

Air quality in Sammamish 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 Sammamish, United States

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

48h

PM2.5 Station

48h · 17 stations

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-08-08	76	71–79	24.1 µg/m³	19.0	3h	8
2026-08-07	72	64–98	22.0 µg/m³	15.7	24h	3
2026-08-06	92	82–115	31.3 µg/m³	23.7	21h	3

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