Air Quality in San Diego, United States

Windy
26.4°C · 48.0% humidity
26.4°
Feels 26.4°
55
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
7 stations

Nearby Monitoring Stations

AQI Forecast
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Air Quality Index Trend

45h · 9 stn

San Diego's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

48.0%
Humidity
44.7 km/h
Wind NW
1015.2 hPa
Pressure
0.0
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
55
14.12 µg/m³
PM10
51
54.9 µg/m³
050100150200300500

What is the weather forecast for San Diego?

Temperature & Precipitation

PM2.5 Trend

45h · 9 stations
PM2.514.12 µg/m³ ✓ WHO
Moderate
PM1054.9 µg/m³
Moderate
UV INDEX0.0
Low
Station readings (7 stations within 25 km)
14.12
Median
14.15
Average
8.96
Low
19.97
High
PM2.5 µg/m³ · Model: 13.5 · Bias: -0.6

What is the 7-day forecast for San Diego?

10-20
26.4° 21.7°
10-21
23.4° 20.3°
10-22
24.7° 20.9°
10-23
22.5° 20.3°
10-24
22.3° 19.2°
0.19 mm
10-25
27.0° 18.4°
10-26
23.7° 20.1°
Both models agree Avg diff: 3.6°C

Where are air quality stations near San Diego?

87
San Diego - Sherman Elementary School, San Diego, California
2.2 km PM2.5: 29.2 µg/m³
50
San Diego - Sherman Elementary School, San Diego, California
2.2 km PM2.5: 12.0 µg/m³
55
Southwest Chula Vista
2.2 km PM2.5: 13.8 µg/m³
35
CRSF (EHS Bldg)
18.8 km PM2.5: 8.3 µg/m³
53
Smythe Avenue
20.0 km PM2.5: 12.9 µg/m³
56
Ocean View Hills
20.7 km PM2.5: 14.5 µg/m³
61
El Cajon-Redwood Avenue, San Diego, California
22.4 km PM2.5: 16.9 µg/m³
60
International Border
22.6 km PM2.5: 16.6 µg/m³
95
Otay Mesa - Donovan Correctional Facility, San Diego, California
26.7 km PM2.5: 33.0 µg/m³
90
Otay Mesa - Donovan Correctional Facility, San Diego, California
26.7 km PM2.5: 30.6 µg/m³

What cities are near San Diego?

55 Coronado 58 National City 62 Chula Vista 57 Lemon Grove 55 La Mesa 63 Imperial Beach 62 La Presa 56 Spring Valley 40 La Jolla 48 Casa de Oro-Mount Helix
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-20T20:06 UTC.