1. North America
  2. United States
  3. California
  4. San Diego County
  5. San Marcos

San Marcos

San Diego County, California

2026-05-18 19:00
AQI (India)
Good
Pollutants|Pollens
PM10
μg/m³
50
PM2.5
μg/m³
21.1
Weather
  • ℃
  • ℉
22℃
60%
16 kph
9 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (India)
  • Pollen
  • PM10
  • PM2.5
Data Sources
http://www.airnow.gov/

Get the App

Scan QR Code
Air Matters
Realtime broadcasting air quality information on your phone for more than 180 countries.

iPhone, iPad

Android

Cities Nearby

San Marcos
AQI 50
Lake San Marcos
AQI 50
Escondido
AQI 50
Vista
AQI 32
Hidden Meadows
AQI 32
Rancho Santa Fe
AQI 50
Valley Center
AQI 50
Encinitas
AQI 50
Fairbanks Ranch
AQI 50
Carlsbad
AQI 32
Solana Beach
AQI 50