What is the air quality trend in Tualatin?

Over the past 8 days, Tualatin had an average AQI of 64 based on station measurements. The worst day was 2026-08-05 with AQI 125.

How is Tualatin air quality measured?

Air quality in Tualatin 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 Tualatin, United States

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 24 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-08	52	52–52	12.4 µg/m³	2h	22
2026-08-07	73	54–117	22.4 µg/m³	24h	18
2026-08-06	103	71–153	36.0 µg/m³	24h	18
2026-08-05	125	96–153	45.3 µg/m³	24h	17
2026-08-04	97	65–152	33.5 µg/m³	24h	20
2026-08-03	32	11–86	8.7 µg/m³	24h	18
2026-08-02	16	8–28	3.8 µg/m³	24h	19
2026-08-01	18	10–30	4.3 µg/m³	19h	20

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