Air Quality in San Diego, United States

Cloudy
19.1°C · 73.5% humidity
19.1°
Feels 19.1°
40
Good
Air quality is satisfactory. Enjoy outdoor activities.
6 stations

Nearby Monitoring Stations

AQI Forecast
34 5pm
34
34
40 8pm
38
37
36 11pm
56
55
55 2am
55
54
54 5am
54
54
54 8am
54
54
54 11am
54
54
54 2pm
54
34
AD 728×90

Air Quality Index Trend

48h · 1 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.

73.5%
Humidity
32.9 km/h
Wind W
1010.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
40
9.66 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for San Diego?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.59.66 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (6 stations within 25 km)
9.66
Median
7.63
Average
6.36
Low
9.8
High
PM2.5 µg/m³ · Model: 7.1 · Bias: -2.6

What is the 7-day forecast for San Diego?

06-09
21.2° 17.7°
06-10
20.9° 17.8°
06-11
20.4° 18.2°
06-12
20.6° 17.7°
06-13
22.3° 18.0°
06-14
20.3° 19.1°
06-15
20.1° 16.8°
0.38 mm
Both models agree Avg diff: 1.6°C

Where are air quality stations near San Diego?

50
San Diego - Sherman Elementary School, San Diego, California
2.2 km PM2.5: 12.0 µg/m³
4
San Diego - Sherman Elementary School, San Diego, California
2.2 km PM2.5: 1.0 µg/m³
34
San Diego - Sherman Elementary School, San Diego, California
2.2 km PM2.5: 8.2 µg/m³
27
CRSF (EHS Bldg)
18.8 km PM2.5: 6.4 µg/m³
28
Smythe Avenue
20.0 km PM2.5: 6.8 µg/m³
27
Ocean View Hills
20.7 km PM2.5: 6.5 µg/m³
50
El Cajon-Redwood Avenue, San Diego, California
22.4 km PM2.5: 12.0 µg/m³
22
El Cajon-Redwood Avenue, San Diego, California
22.4 km PM2.5: 5.3 µg/m³
28
International Border
22.6 km PM2.5: 6.8 µg/m³
41
Otay Mesa - Donovan Correctional Facility, San Diego, California
26.7 km PM2.5: 9.8 µg/m³

What cities are near San Diego?

38 Coronado 37 National City 32 Chula Vista 36 Lemon Grove 37 La Mesa 29 Imperial Beach 34 La Presa 37 Spring Valley 27 La Jolla 39 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 2026-06-09T03:15 UTC.