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

St. Helena

Napa County, California

2026-05-12 19:00
AQI (Netherlands)
Moderate
Pollutants|Pollens
O3
μg/m³
45.3
PM10
μg/m³
10.4
PM2.5
μg/m³
4.7
NO2
μg/m³
1.4
Weather
  • ℃
  • ℉
24℃
72%
7 kph
8 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (Netherlands)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • 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 4
Deer Park
AQI 4
Rutherford
AQI 4
Angwin
AQI 3
Oakville
AQI 4
Kenwood
AQI 4
Calistoga
AQI 4
Yountville
AQI 4
Glen Ellen
AQI 4
Eldridge
AQI 4
Fetters Hot Springs-Agua Caliente
AQI 4