What is the air quality trend in Oroville?

Over the past 15 days, Oroville had an average AQI of 33 based on station measurements. The worst day was 2026-09-01 with AQI 45.

How is Oroville air quality measured?

Air quality in Oroville 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 Oroville, United States

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

333h

PM2.5 Station

333h · 12 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-05	32	23–44	7.7 µg/m³	17h	10
2026-09-04	25	17–41	6.1 µg/m³	24h	10
2026-09-03	28	19–45	6.6 µg/m³	24h	10
2026-09-02	32	23–53	7.6 µg/m³	24h	11
2026-09-01	45	32–56	11.1 µg/m³	24h	10
2026-08-31	44	33–57	10.6 µg/m³	24h	10
2026-08-30	31	24–38	7.4 µg/m³	24h	11
2026-08-29	35	28–45	8.3 µg/m³	24h	11
2026-08-28	33	22–43	7.9 µg/m³	24h	11
2026-08-27	31	20–52	7.4 µg/m³	24h	11
2026-08-26	32	21–57	7.8 µg/m³	24h	11
2026-08-25	31	22–52	7.3 µg/m³	24h	11
2026-08-24	37	27–47	8.9 µg/m³	24h	11
2026-08-23	31	18–51	7.5 µg/m³	24h	11
2026-08-22	32	21–39	7.7 µg/m³	4h	11

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