What is the air quality trend in Mission Viejo?

Over the past 15 days, Mission Viejo had an average AQI of 36 based on station measurements. The worst day was 2026-06-05 with AQI 57.

How is Mission Viejo air quality measured?

Air quality in Mission Viejo 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 Mission Viejo, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

331h

PM2.5 Station

331h · 18 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-06-09	36	35–38	8.8 µg/m³	6h	19
2026-06-08	37	30–49	8.9 µg/m³	24h	19
2026-06-07	36	29–40	8.7 µg/m³	24h	20
2026-06-06	45	38–55	10.8 µg/m³	23h	20
2026-06-05	57	51–67	15.0 µg/m³	24h	20
2026-06-04	49	41–61	12.3 µg/m³	24h	20
2026-06-03	51	34–65	13.0 µg/m³	24h	20
2026-06-02	49	38–60	12.1 µg/m³	24h	20
2026-06-01	42	33–56	10.2 µg/m³	23h	19
2026-05-31	35	24–46	8.4 µg/m³	24h	20
2026-05-30	22	15–30	5.2 µg/m³	24h	20
2026-05-29	19	16–22	4.5 µg/m³	24h	20
2026-05-28	20	17–40	4.8 µg/m³	23h	19
2026-05-27	22	18–25	5.2 µg/m³	24h	20
2026-05-26	25	22–29	6.0 µg/m³	16h	20

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