Air Quality in San Diego, United States

Windy
25.0°C · 77.3% humidity
25.0°
Feels 25.0°
35
Good
Air quality is satisfactory. Enjoy outdoor activities.
6 stations

Nearby Monitoring Stations

AQI Forecast
66 5am
66
66
35 8am
44
50
55 11am
58
60
62 2pm
63
64
64 5pm
53
53
65 8pm
54
54
54 11pm
54
54
54 2am
54
54
AD 728×90

Air Quality Index Trend

45h · 7 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.

77.3%
Humidity
48.3 km/h
Wind WNW
1015.9 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
35
8.38 µg/m³
PM10▲
60
73.05 µg/m³
050100150200300500

What is the weather forecast for San Diego?

Temperature & Precipitation

PM2.5 Trend

45h · 7 stations
PM2.58.38 µg/m³ ✓ WHO
Good
PM1073.05 µg/m³
Moderate
UV INDEX2.2
Moderate
AD 300×250
Station readings (6 stations within 25 km)
8.38
Median
8.19
Average
7.01
Low
8.87
High
PM2.5 µg/m³ · Model: 23.15 · Bias: +14.8

What is the 7-day forecast for San Diego?

09-05
25.0° 21.9°
09-06
25.9° 21.3°
1.44 mm
09-07
24.5° 22.8°
09-08
25.0° 20.0°
0.25 mm
09-09
26.2° 20.8°
09-10
24.8° 19.5°
0.31 mm
09-11
27.4° 21.1°
Both models agree Avg diff: 3.0°C

Where are air quality stations near San Diego?

35
San Diego - Sherman Elementary School, San Diego, California
2.2 km PM2.5: 8.4 µg/m³
35
San Diego - Sherman Elementary School, San Diego, California
2.2 km PM2.5: 8.4 µg/m³
29
CRSF (EHS Bldg)
18.8 km PM2.5: 7.0 µg/m³
35
Smythe Avenue
20.0 km PM2.5: 8.4 µg/m³
33
Ocean View Hills
20.7 km PM2.5: 7.9 µg/m³
36
El Cajon-Redwood Avenue, San Diego, California
22.4 km PM2.5: 8.6 µg/m³
37
International Border
22.6 km PM2.5: 8.9 µg/m³
159
Otay Mesa - Donovan Correctional Facility, San Diego, California
26.7 km PM2.5: 71.0 µg/m³
48
La Mesa
30.0 km PM2.5: 11.5 µg/m³

What cities are near San Diego?

35 Coronado 48 National City 54 Chula Vista 54 Lemon Grove 51 La Mesa 49 Imperial Beach 62 La Presa 54 Spring Valley 30 La Jolla 44 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 2026-09-05T15:08 UTC.