What is the air quality trend in Riverside?

Over the past 15 days, Riverside had an average AQI of 32 based on station measurements. The worst day was 2026-06-05 with AQI 46.

How is Riverside air quality measured?

Air quality in Riverside 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 Riverside, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

329h

PM2.5 Station

329h · 10 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-06-09	39	35–43	9.5 µg/m³	4h	14
2026-06-08	34	22–50	8.2 µg/m³	24h	11
2026-06-07	33	23–44	8.0 µg/m³	24h	12
2026-06-06	42	30–54	10.2 µg/m³	23h	12
2026-06-05	46	32–58	11.3 µg/m³	24h	12
2026-06-04	43	31–57	10.5 µg/m³	24h	12
2026-06-03	45	30–59	11.2 µg/m³	24h	12
2026-06-02	43	28–60	10.4 µg/m³	24h	13
2026-06-01	32	24–44	7.6 µg/m³	21h	14
2026-05-31	26	22–31	6.1 µg/m³	24h	12
2026-05-30	19	15–26	4.5 µg/m³	24h	13
2026-05-29	20	16–24	4.8 µg/m³	24h	13
2026-05-28	20	16–47	4.8 µg/m³	23h	12
2026-05-27	22	16–25	5.2 µg/m³	24h	14
2026-05-26	24	19–28	5.7 µg/m³	18h	13

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