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  4. San Diego County

San Diego County

California

2026-10-21 09:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
19.3
O3
μg/m³
54
PM2.5
μg/m³
6.2
Weather
  • ℃
  • ℉
18℃
91%
2 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • O3
  • PM2.5
Places included
Alpine
AQI 29
Borrego Springs
AQI 22
Camp Pendleton South
AQI 20
Campo
AQI 23
Carlsbad
AQI 20
Casa de Oro-Mount Helix
AQI 21
Chula Vista
AQI 14
Coronado
AQI 18
Del Mar
AQI 18
El Cajon
AQI 23
Encinitas
AQI 18
Escondido
AQI 18
Fairbanks Ranch
AQI 18
Fallbrook
AQI 20
Hidden Meadows
AQI 18
Imperial Beach
AQI 14
La Mesa
AQI 21
La Posta Band of Indians
AQI 27
Lake San Marcos
AQI 18
Lemon Grove
AQI 21
National City
AQI 18
Oceanside
AQI 20
Poway
AQI 18
Rainbow
AQI 20
Rancho Santa Fe
AQI 18
San Diego
AQI 29
San Marcos
AQI 18
Santee
AQI 21
Solana Beach
AQI 18
Spring Valley
AQI 21
Valley Center
AQI 18
Vista
AQI 18
Winter Gardens
AQI 21
Data Sources
http://www.airnow.gov/

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Cities Nearby

San Diego
AQI 29
Coronado
AQI 18
National City
AQI 18
Chula Vista
AQI 14
Lemon Grove
AQI 21
La Mesa
AQI 21
Imperial Beach
AQI 14
Spring Valley
AQI 21
Casa de Oro-Mount Helix
AQI 21
El Cajon
AQI 23
Santee
AQI 21