Air Quality in San Diego, United States

Windy
20.3°C · 71.3% humidity
20.3°
Feels 20.3°
28
Good
Air quality is satisfactory. Enjoy outdoor activities.
6 stations

Nearby Monitoring Stations

AQI Forecast
34 12pm
34
34
28 3pm
30
51
32 6pm
32
33
33 9pm
33
34
34 12am
54
54
54 3am
54
54
54 6am
34
34
34 9am
34
34
AD 728×90

Air Quality Index Trend

46h · 8 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. Current PM2.5 concentration in San Diego is 1.3× the WHO annual guideline of 5 µg/m³.

71.3%
Humidity
53.5 km/h
Wind W
1012.6 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
28
6.59 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for San Diego?

Temperature & Precipitation

PM2.5 Trend

46h · 8 stations
PM2.56.59 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX14.9
Extreme
AD 300×250
Station readings (6 stations within 25 km)
6.59
Median
5.0
Average
3.77
Low
7.7
High
PM2.5 µg/m³ · Model: 7.1 · Bias: +0.5

What is the 7-day forecast for San Diego?

05-28
20.0° 17.3°
05-29
22.0° 17.4°
05-30
17.8° 16.4°
05-31
20.5° 18.7°
06-01
21.0° 17.5°
06-02
21.3° 16.2°
06-03
20.7° 15.6°
Both models agree Avg diff: 1.7°C

Where are air quality stations near San Diego?

30
San Diego - Sherman Elementary School, San Diego, California
2.2 km PM2.5: 7.2 µg/m³
28
San Diego - Sherman Elementary School, San Diego, California
2.2 km PM2.5: 6.7 µg/m³
34
San Diego - Sherman Elementary School, San Diego, California
2.2 km PM2.5: 8.2 µg/m³
16
CRSF (EHS Bldg)
18.8 km PM2.5: 3.9 µg/m³
17
Smythe Avenue
20.0 km PM2.5: 4.0 µg/m³
16
Ocean View Hills
20.7 km PM2.5: 3.8 µg/m³
49
El Cajon-Redwood Avenue, San Diego, California
22.4 km PM2.5: 11.8 µg/m³
59
El Cajon-Redwood Avenue, San Diego, California
22.4 km PM2.5: 15.9 µg/m³
17
International Border
22.6 km PM2.5: 4.0 µg/m³
55
Otay Mesa - Donovan Correctional Facility, San Diego, California
26.7 km PM2.5: 14.0 µg/m³

What cities are near San Diego?

26 Coronado 26 National City 22 Chula Vista 27 Lemon Grove 28 La Mesa 19 Imperial Beach 28 La Presa 30 Spring Valley 17 La Jolla 32 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 2026-05-28T22:55 UTC.