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

St. Helena

Napa County, California

2026-05-09 09:00
AQI (US)
Good
Pollutants|Pollens
PM2.5
μg/m³
7.5
O3
μg/m³
41.5
PM10
μg/m³
10.4
CO
μg/m³
270.9
NO2
μg/m³
2.4
Weather
  • ℃
  • ℉
10℃
92%
1 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • O3
  • PM10
  • CO
  • NO2

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 42
Deer Park
AQI 42
Rutherford
AQI 42
Angwin
AQI 41
Oakville
AQI 42
Kenwood
AQI 39
Calistoga
AQI 39
Yountville
AQI 44
Glen Ellen
AQI 39
Eldridge
AQI 39
Fetters Hot Springs-Agua Caliente
AQI 44