Today | Weather | Tuesday, December 30, 2025

Weather in San Diego, California

03:27 PM
Now
Cloudy Weather
75° F
Feels Like 73°
Precipitation 40 %
Wind 7 mph
UV Index (0 - 11+) 1
Humidity 30 %
Today
Partly Sunny with Showers
Day 79°
Night 63°
Precipitation 80 %
Wind 6 mph
UV Index (0 - 11+) 1

San Diego Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 30, 2024)
Cloudy Weather

Day

63°

Night

48°

Wind

4 mph

UV Index

3

Precipitation

0 %

Air Quality in San Diego

NOW
40 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 6.48 µg/m³
PM10 18.04 µg/m³
O3 0.044 ppm
NO2 3.8 ppb
SO2 0.5 ppb
CO 0.15 ppm
NH3 0.3 µg/m³
NO 0.18 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)
PM2.56.48 µg/m³
PM1018.04 µg/m³
O385.67 µg/m³
NO27.1 µg/m³
SO21.25 µg/m³
CO170.66 µg/m³
NH30.3 µg/m³
NO0.18 µg/m³