Today | Weather | Saturday, October 24, 2026

Weather in Tustin, California

10:56 PM
Now
Cloudy Night
66° F
Feels Like 64°
Precipitation 0 %
Wind 5 mph
Humidity 76 %
Today
Night
Day 79°
Night 55°
Precipitation 1 %
Wind 5 mph

Tustin Weather Forecast Updated

Weather Forecast History
Last Year's Weather on This Day (October 24, 2025)
Cloudy Night

Day

75°

Night

57°

Wind

4 mph

Precipitation

0 %

Air Quality in Tustin

NOW
49 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 6.88 µg/m³
PM10 13.06 µg/m³
O3 0.052 ppm
NO2 0.3 ppb
SO2 0.2 ppb
CO 0.13 ppm
NH3 0.08 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)
PM2.5 – 6.88 µg/m³
PM10 – 13.06 µg/m³
O3 – 102.9 µg/m³
NO2 – 0.58 µg/m³
SO2 – 0.56 µg/m³
CO – 149.92 µg/m³
NH3 – 0.08 µg/m³
NO – 0 µg/m³