Today | Weather | Sunday, April 26, 2026

Weather in San Diego, California

02:34 AM
Now
Cloudy Weather
57° F
Feels Like 54°
Precipitation 49 %
Wind 9 mph
Humidity 86 %
Today
Cloudy Weather
Day 68°
Night 55°
Precipitation 55 %
Wind 10 mph
UV Index (0 - 11+) 6

San Diego Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 26, 2025)
Partly Sunny with Showers

Day

64°

Night

54°

Wind

9 mph

UV Index

4

Precipitation

86 %

Air Quality in San Diego

NOW
49 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.69 µg/m³
PM10 2.35 µg/m³
O3 0.053 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)
PM2.50.69 µg/m³
PM102.35 µg/m³
O3104.73 µg/m³
NO20.17 µg/m³
SO20.23 µg/m³
CO126.08 µg/m³
NH30 µg/m³
NO0 µg/m³