Today | Weather | Thursday, October 30, 2025

Weather in San Diego, California

11:31 AM
Now
Sunny Weather
79° F
Feels Like 82°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 4
Humidity 29 %
Today
Sunny Weather
Day 81°
Night 55°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 4

San Diego Weather Forecast Updated

4 minutes ago
Last updated on

Weather Forecast History

Last Year's Weather on This Day (October 30, 2024)

Cloudy Night

Day

72°

Night

50°

Wind

4 mph

Precipitation

0

Air Quality in San Diego

NOW
66 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 19.62 µg/m³
PM10 32.82 µg/m³
O3 0.047 ppm
NO2 0.4 ppb
SO2 0.2 ppb
CO 0.14 ppm
NH3 0 µg/m³
NO 0.11 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.519.62 µg/m³
PM1032.82 µg/m³
O391.87 µg/m³
NO20.66 µg/m³
SO20.61 µg/m³
CO160.17 µg/m³
NH30 µg/m³
NO0.11 µg/m³