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

St. Helena

Napa County, California

2026-05-17 08:00
AQI (India)
Good
Pollutants|Pollens
O3
μg/m³
47.7
PM2.5
μg/m³
6.6
PM10
μg/m³
10.3
CO
μg/m³
193.8
NO2
μg/m³
2
Weather
  • ℃
  • ℉
11℃
69%
7 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (India)
  • Pollen
  • O3
  • PM2.5
  • 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 48
Deer Park
AQI 48
Rutherford
AQI 57
Angwin
AQI 33
Oakville
AQI 57
Kenwood
AQI 12
Calistoga
AQI 12
Yountville
AQI 53
Glen Ellen
AQI 12
Eldridge
AQI 12
Fetters Hot Springs-Agua Caliente
AQI 57