Today | Weather | Thursday, November 20, 2025

Weather in San Diego, California

10:58 AM
Now
Cloudy Weather
63° F
Feels Like 63°
Precipitation 18 %
Wind 8 mph
UV Index (0 - 11+) 2
Humidity 70 %
Today
Partly Sunny with Showers
Day 63°
Night 55°
Precipitation 74 %
Wind 8 mph
UV Index (0 - 11+) 2

San Diego Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (November 20, 2024)
Cloudy Night

Day

70°

Night

43°

Wind

4 mph

Precipitation

0 %

Air Quality in San Diego

NOW
45 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.3 µg/m³
PM10 4.03 µg/m³
O3 0.049 ppm
NO2 0.1 ppb
SO2 0.1 ppb
CO 0.09 ppm
NH3 0 µg/m³
NO 0.02 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)
PM2.51.3 µg/m³
PM104.03 µg/m³
O395.9 µg/m³
NO20.25 µg/m³
SO20.22 µg/m³
CO105.63 µg/m³
NH30 µg/m³
NO0.02 µg/m³