Today | Weather | Sunday, April 5, 2026

Weather in San Diego, California

10:40 PM
Now
Cloudy Night
63° F
Feels Like 63°
Precipitation 0 %
Wind 5 mph
Humidity 82 %
Today
Cloudy Night
Day 75°
Night 59°
Precipitation 0 %
Wind 5 mph

San Diego Weather Forecast Updated

Weather Forecast History
Last Year's Weather on This Day (April 5, 2025)
Sunny Weather

Day

72°

Night

48°

Wind

7 mph

UV Index

8

Precipitation

1 %

Air Quality in San Diego

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

Pollutant Concentrations:

PM2.5 15.6 µg/m³
PM10 28.52 µg/m³
O3 0.055 ppm
NO2 0.3 ppb
SO2 0.2 ppb
CO 0.13 ppm
NH3 0.03 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 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)
PM2.515.6 µg/m³
PM1028.52 µg/m³
O3108.07 µg/m³
NO20.58 µg/m³
SO20.65 µg/m³
CO151.45 µg/m³
NH30.03 µg/m³
NO0 µg/m³