What is the air quality trend in Orinda?

Over the past 8 days, Orinda had an average AQI of 35 based on station measurements. The worst day was 2026-08-03 with AQI 46.

How is Orinda air quality measured?

Air quality in Orinda 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 Orinda, United States

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

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

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 9 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-08-08	34	30–36	8.1 µg/m³	10.6	6h	82
2026-08-07	32	20–44	7.7 µg/m³	5.5	24h	96
2026-08-06	33	28–62	8.1 µg/m³	5.1	24h	92
2026-08-05	36	32–40	8.7 µg/m³	7.0	24h	91
2026-08-04	39	32–47	9.4 µg/m³	7.9	24h	93
2026-08-03	46	35–52	11.0 µg/m³	15.9	24h	89
2026-08-02	34	29–39	8.2 µg/m³	9.9	24h	94
2026-08-01	29	26–33	7.0 µg/m³	5.7	15h	95

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