What is the air quality trend in Mission Viejo?

Over the past 8 days, Mission Viejo had an average AQI of 50 based on station measurements. The worst day was 2026-08-04 with AQI 56.

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 CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 13 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-08	43	39–52	10.3 µg/m³	5h	14
2026-08-07	48	38–67	11.9 µg/m³	24h	12
2026-08-06	51	40–69	12.8 µg/m³	24h	12
2026-08-05	53	40–73	13.6 µg/m³	24h	12
2026-08-04	56	39–129	15.3 µg/m³	24h	12
2026-08-03	52	39–64	13.3 µg/m³	24h	11
2026-08-02	48	39–57	11.6 µg/m³	24h	11
2026-08-01	53	47–58	13.2 µg/m³	16h	12

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