Today | Weather | Monday, January 5, 2026

Weather in Mission Viejo, California

06:10 AM
Now
Cloudy Night
54° F
Feels Like 52°
Precipitation 41 %
Wind 5 mph
Humidity 93 %
Today
Partly Sunny with Showers
Day 63°
Night 50°
Precipitation 56 %
Wind 5 mph
UV Index (0 - 11+) 1

Mission Viejo Weather Forecast Updated

Last updated on

Air Quality in Mission Viejo

NOW
44 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.5 µg/m³
PM10 0.96 µg/m³
O3 0.047 ppm
NO2 0.1 ppb
SO2 0 ppb
CO 0.10 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:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.50.5 µg/m³
PM100.96 µg/m³
O392.33 µg/m³
NO20.15 µg/m³
SO20.06 µg/m³
CO117.47 µg/m³
NH30 µg/m³
NO0 µg/m³