What is the air quality trend in Oregon City?

Over the past 8 days, Oregon City had an average AQI of 68 based on station measurements. The worst day was 2026-08-05 with AQI 118.

How is Oregon City air quality measured?

Air quality in Oregon City 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 Oregon City, United States

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 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	65	55–72	18.6 µg/m³	6h	25
2026-08-07	77	57–117	24.2 µg/m³	24h	22
2026-08-06	99	73–152	34.1 µg/m³	24h	20
2026-08-05	118	90–157	42.7 µg/m³	24h	19
2026-08-04	102	69–155	35.7 µg/m³	24h	23
2026-08-03	36	12–91	9.9 µg/m³	24h	20
2026-08-02	19	8–38	4.4 µg/m³	24h	22
2026-08-01	28	12–56	6.7 µg/m³	16h	23

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