Hourly Weather | Today Tuesday, January 13, 2026
Santa Rosa, California
3 PM
Cloudy Weather
66°
Feels Like 66°
0
Humidity: 56%
Wind: 4 mph
UV Index: 1
4 PM
Cloudy Weather
64°
Feels Like 66°
0
Humidity: 61%
Wind: 4 mph
UV Index: 1
5 PM
Cloudy Weather
61°
Feels Like 61°
0
Humidity: 70%
Wind: 4 mph
UV Index: 0
6 PM
Cloudy Night
55°
Feels Like 55°
0
Humidity: 78%
Wind: 4 mph
UV Index: 0
7 PM
Night
54°
Feels Like 54°
0
Humidity: 80%
Wind: 4 mph
UV Index: 0
8 PM
Night
50°
Feels Like 50°
0
Humidity: 86%
Wind: 4 mph
UV Index: 0
9 PM
Night
46°
Feels Like 46°
0
Humidity: 93%
Wind: 5 mph
UV Index: 0
10 PM
Night
46°
Feels Like 45°
0
Humidity: 95%
Wind: 5 mph
UV Index: 0
11 PM
Night
45°
Feels Like 45°
0
Humidity: 98%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

3 PM
70 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 21.55 µg/m³
  • PM10: 26.73 µg/m³
  • O3: 0.039 ppm
  • NO2: 7.3 ppb
  • SO2: 1.1 ppb
  • CO: 0.25 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM
68 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 20.31 µg/m³
  • PM10: 25.33 µg/m³
  • O3: 0.039 ppm
  • NO2: 7.4 ppb
  • SO2: 1 ppb
  • CO: 0.24 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
63 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 18.21 µg/m³
  • PM10: 22.9 µg/m³
  • O3: 0.037 ppm
  • NO2: 7.7 ppb
  • SO2: 0.8 ppb
  • CO: 0.23 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM
58 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.56 µg/m³
  • PM10: 19.83 µg/m³
  • O3: 0.035 ppm
  • NO2: 6.8 ppb
  • SO2: 0.7 ppb
  • CO: 0.22 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 PM
53 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.34 µg/m³
  • PM10: 17.24 µg/m³
  • O3: 0.034 ppm
  • NO2: 5.7 ppb
  • SO2: 0.7 ppb
  • CO: 0.21 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

8 PM
50 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.11 µg/m³
  • PM10: 15.78 µg/m³
  • O3: 0.033 ppm
  • NO2: 5.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

9 PM
48 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.45 µg/m³
  • PM10: 15.16 µg/m³
  • O3: 0.032 ppm
  • NO2: 5.3 ppb
  • SO2: 0.6 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

10 PM
45 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.75 µg/m³
  • PM10: 14.72 µg/m³
  • O3: 0.031 ppm
  • NO2: 5.1 ppb
  • SO2: 0.6 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

11 PM
42 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.02 µg/m³
  • PM10: 14.41 µg/m³
  • O3: 0.032 ppm
  • NO2: 4.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.18 ppm

Health Recommendations:

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