Hourly Weather | Today Wednesday, February 25, 2026
Napa, California
10 PM
Rainy Weather
57°
Feels Like 55°
40
Humidity: 87%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
55°
Feels Like 55°
37
Humidity: 89%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

10 PM
25 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.28 µg/m³
  • PM10: 7.65 µg/m³
  • O3: 0.027 ppm
  • NO2: 1.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.39 µg/m³
  • PM10: 6.2 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.