Air Quality in San Diego, United States

Windy
18.8°C · 78.1% humidity
18.8°
Feels 18.8°
70
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
4 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
60 2pm
60
63
35 5pm
34
34
34 8pm
34
34
34 11pm
34
34
34 2am
34
34
34 5am
59
59
59 8am
59
59
59 11am
59
59
Station readings
60
60
63
35
CAMS model adj -16
75
75
75
50
50
50
50
50
50
50
50
50
50
50
50
50
75
75
75
75
75
75
75
75
AD 728×90

PM2.5 Trend (24h)

28h · 1 station
78.1%
Humidity
43.8 km/h
Wind W
1014.2 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for San Diego?

Temperature & Precipitation

PM2.521.26 µg/m³ ×1.4 WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250
Station readings (4 stations within 25 km)
21.26
Median
20.18
Average
16.55
Low
21.65
High
PM2.5 µg/m³ · Model: 4.4 · Bias: -16.9
Both models agree Avg diff: 1.4°C

Where are air quality stations near San Diego?

64
San Diego - Sherman Elementary School, San Diego, California
2.2 km
63
CRSF (EHS Bldg)
18.8 km PM2.5: 17.9 µg/m³
70
Smythe Avenue
20.0 km PM2.5: 20.9 µg/m³
71
Ocean View Hills
20.7 km PM2.5: 21.6 µg/m³
70
International Border
22.6 km PM2.5: 21.3 µg/m³
89
Otay Mesa - Donovan Correctional Facility, San Diego, California
26.7 km
106
Otay Mesa - Donovan Correctional Facility, San Diego, California
26.7 km
83
La Mesa
30.0 km PM2.5: 27.1 µg/m³

What cities are near San Diego?

70 Coronado 70 National City 70 Chula Vista 70 Lemon Grove 70 La Mesa 70 Imperial Beach 70 La Presa 70 Spring Valley 60 La Jolla 71 Casa de Oro-Mount Helix

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T17:40 UTC.