Today | Weather | Wednesday, April 22, 2026

Weather in San Diego, California

03:35 PM
Now
Cloudy Weather
68° F
Feels Like 70°
Precipitation 0 %
Wind 14 mph
UV Index (0 - 11+) 4
Humidity 56 %
Today
Cloudy Weather
Day 70°
Night 55°
Precipitation 25 %
Wind 10 mph
UV Index (0 - 11+) 9

Warning: High UV Index Today: 9

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

San Diego Weather Forecast Updated

43 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 22, 2025)
Cloudy Weather

Day

66°

Night

55°

Wind

7 mph

UV Index

10

Precipitation

0 %

Air Quality in San Diego

NOW
50 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.38 µg/m³
PM10 5.09 µg/m³
O3 0.054 ppm
NO2 0.1 ppb
SO2 0.2 ppb
CO 0.12 ppm
NH3 0 µg/m³
NO 0.03 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)
PM2.51.38 µg/m³
PM105.09 µg/m³
O3105.17 µg/m³
NO20.18 µg/m³
SO20.51 µg/m³
CO135.47 µg/m³
NH30 µg/m³
NO0.03 µg/m³