What is the air quality trend in Petaluma?

Over the past 15 days, Petaluma had an average AQI of 25 based on station measurements. The worst day was 2026-06-02 with AQI 37.

How is Petaluma air quality measured?

Air quality in Petaluma 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 Petaluma, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

334h

PM2.5 Station

334h · 56 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-06-09	20	13–55	4.8 µg/m³	16h	55
2026-06-08	23	19–25	5.6 µg/m³	24h	55
2026-06-07	25	23–28	6.0 µg/m³	24h	55
2026-06-06	29	24–34	6.9 µg/m³	24h	51
2026-06-05	36	31–38	8.5 µg/m³	24h	53
2026-06-04	26	20–34	6.3 µg/m³	24h	54
2026-06-03	29	25–32	7.0 µg/m³	24h	54
2026-06-02	37	32–40	8.8 µg/m³	24h	54
2026-06-01	35	18–65	8.6 µg/m³	24h	48
2026-05-31	30	27–32	7.2 µg/m³	24h	55
2026-05-30	23	14–29	5.4 µg/m³	24h	54
2026-05-29	17	13–23	4.2 µg/m³	24h	53
2026-05-28	22	12–54	5.3 µg/m³	24h	49
2026-05-27	20	18–48	4.8 µg/m³	24h	54
2026-05-26	16	15–18	3.9 µg/m³	6h	54

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