Today | Weather | Thursday, February 5, 2026

Weather in Mission Viejo, California

05:36 PM
Now
Cloudy Night
66° F
Feels Like 61°
Precipitation 5 %
Wind 21 mph
Humidity 54 %
Today
Cloudy Weather
Day 81°
Night 52°
Precipitation 25 %
Wind 8 mph
UV Index (0 - 11+) 4

Mission Viejo Weather Forecast Updated

39 minutes ago
Last updated on

Air Quality in Mission Viejo

NOW
152 AQI
Unhealthy air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 58.62 µg/m³
PM10 88.75 µg/m³
O3 0.060 ppm
NO2 0.3 ppb
SO2 0.1 ppb
CO 0.26 ppm
NH3 0 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.

Show raw pollutant concentrations (µg/m³)
PM2.558.62 µg/m³
PM1088.75 µg/m³
O3118.75 µg/m³
NO20.56 µg/m³
SO20.36 µg/m³
CO294.25 µg/m³
NH30 µg/m³
NO0 µg/m³