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  4. Napa County
  5. St. Helena

St. Helena

Napa County, California

2026-04-18 03:00
AQHI (Canada)
Low
Pollutants|Pollens
O3
μg/m³
84.7
PM10
μg/m³
10.3
PM2.5
μg/m³
4.7
NO2
μg/m³
2.9
Weather
  • ℃
  • ℉
14℃
54%
5 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQHI (Canada)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
Places included
Adams Street
AQI --
Adams Street
AQI --
Adams Street B
AQI --
Adams Street B
AQI --
Adams Street inside
AQI --
Big Rock
AQI --
Big Rock B
AQI --
CIA Greystone
AQI --
CIA Greystone B
AQI --
Charter Oak Magnolia
AQI --
Clubhouse gamesroom
AQI --
Fir Hill
AQI --
Kearney & Pine
AQI --
Kearney & Pine B
AQI --
MMCA81046
AQI --
Pratt Ave.
AQI --
Pratt Barn
AQI --
Pratt Barn B
AQI --
Spottswoode Vineyard
AQI --
St Helena Parks & Recreation
AQI --
St Helena Parks & Recreation B
AQI --
St. Helena Boys & Girls Club
AQI --
St. Helena Boys & Girls Club B
AQI --
St. Helena Primary School
AQI --
St. Helena Primary School B
AQI --
Stockton ST
AQI --
Stockton ST B
AQI --
TFE - Main Street
AQI --

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