What is the air quality trend in Spokane Valley?

Over the past 8 days, Spokane Valley had an average AQI of 26 based on station measurements. The worst day was 2026-10-17 with AQI 40.

How is Spokane Valley air quality measured?

Air quality in Spokane Valley 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 Spokane Valley, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

163h

PM2.5 Station

163h · 16 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-20	35	23–47	8.5 µg/m³	21h	16
2026-10-19	30	7–46	7.2 µg/m³	24h	16
2026-10-18	20	9–34	4.8 µg/m³	24h	16
2026-10-17	40	22–51	9.6 µg/m³	24h	16
2026-10-16	27	12–37	6.5 µg/m³	19h	16
2026-10-15	29	12–41	6.9 µg/m³	24h	16
2026-10-14	19	9–30	4.5 µg/m³	24h	16
2026-10-13	9	7–14	2.3 µg/m³	3h	15

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