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

St. Helena

Napa County, California

2026-05-14 20:00
AQI (India)
Satisfactory
Pollutants|Pollens
O3
μg/m³
59.2
CO
μg/m³
280.6
PM2.5
μg/m³
6.4
PM10
μg/m³
10.4
NO2
μg/m³
1.9
Weather
  • ℃
  • ℉
27℃
47%
3 kph
9 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (India)
  • Pollen
  • O3
  • CO
  • PM2.5
  • PM10
  • 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 60
Deer Park
AQI 60
Rutherford
AQI 69
Angwin
AQI 42
Oakville
AQI 69
Kenwood
AQI 15
Calistoga
AQI 15
Yountville
AQI 62
Glen Ellen
AQI 15
Eldridge
AQI 15
Fetters Hot Springs-Agua Caliente
AQI 64