Hourly Weather | Today Thursday, February 5, 2026
Napa, California
7 PM
Cloudy Night
64°
Feels Like 63°
0
Humidity: 57%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Night
59°
Feels Like 57°
0
Humidity: 68%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Night
54°
Feels Like 54°
0
Humidity: 79%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
50°
Feels Like 48°
0
Humidity: 87%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
52°
Feels Like 48°
0
Humidity: 85%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

7 PM
150 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 56.22 µg/m³
  • PM10: 62.44 µg/m³
  • O3: 0.055 ppm
  • NO2: 7.2 ppb
  • SO2: 1.3 ppb
  • CO: 0.34 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

8 PM
150 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 55.72 µg/m³
  • PM10: 61.64 µg/m³
  • O3: 0.050 ppm
  • NO2: 6.7 ppb
  • SO2: 1 ppb
  • CO: 0.35 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

9 PM
149 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 54.97 µg/m³
  • PM10: 61.01 µg/m³
  • O3: 0.047 ppm
  • NO2: 6.3 ppb
  • SO2: 0.9 ppb
  • CO: 0.35 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

10 PM
144 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 53.07 µg/m³
  • PM10: 59.62 µg/m³
  • O3: 0.047 ppm
  • NO2: 5.7 ppb
  • SO2: 0.8 ppb
  • CO: 0.34 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

11 PM
133 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 48.5 µg/m³
  • PM10: 55.31 µg/m³
  • O3: 0.049 ppm
  • NO2: 4.6 ppb
  • SO2: 0.8 ppb
  • CO: 0.31 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.