1. North America
  2. United States
  3. California
  4. Napa County
  5. St. Helena

St. Helena

Napa County, California

2026-02-18 15:00
AQI (India)
Good
Pollutants|Pollens
NO2
μg/m³
18.8
O3
μg/m³
19.3
PM10
μg/m³
17.6
CO
μg/m³
233
PM2.5
μg/m³
5
Weather
  • ℃
  • ℉
1℃
90%
5 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (India)
  • Pollen
  • NO2
  • O3
  • PM10
  • CO
  • PM2.5

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

St. Helena
AQI 24
Deer Park
AQI 24
Rutherford
AQI 24
Angwin
AQI 24
Oakville
AQI 24
Kenwood
AQI 9
Calistoga
AQI 9
Yountville
AQI 24
Glen Ellen
AQI 9
Eldridge
AQI 9
Fetters Hot Springs-Agua Caliente
AQI 24