Today | Weather | Saturday, October 24, 2026

Weather in San Diego, California

03:22 AM
Now
Cloudy Night
61° F
Feels Like 61°
Precipitation 20 %
Wind 5 mph
Humidity 90 %
Today
Cloudy Weather
Day 73°
Night 61°
Precipitation 2 %
Wind 7 mph
UV Index (0 - 11+) 4

San Diego Weather Forecast Updated

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

Day

72°

Night

57°

Wind

4 mph

Precipitation

49 %

Air Quality in San Diego

NOW
44 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.05 µg/m³
PM10 5.52 µg/m³
O3 0.048 ppm
NO2 0.1 ppb
SO2 0.1 ppb
CO 0.11 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)
PM2.5 – 2.05 µg/m³
PM10 – 5.52 µg/m³
O3 – 93.76 µg/m³
NO2 – 0.26 µg/m³
SO2 – 0.23 µg/m³
CO – 126.28 µg/m³
NH3 – 0 µg/m³
NO – 0 µg/m³