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Today Hourly 7 days 30 days Air Quality
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Hourly Weather | Today › Sunday, December 14, 2025
Active Weather Warnings
Santa Rosa, California
6 AM
Foggy Weather
36°
Feels Like 36°
5
Humidity: 97%
Wind: 4 mph
UV Index: 0
7 AM
Foggy Weather
36°
Feels Like 36°
0
Humidity: 100%
Wind: 4 mph
UV Index: 0
8 AM
Foggy Weather
37°
Feels Like 37°
0
Humidity: 98%
Wind: 4 mph
UV Index: 0
9 AM
Foggy Weather
41°
Feels Like 39°
0
Humidity: 96%
Wind: 5 mph
UV Index: 0
10 AM
Foggy Weather
45°
Feels Like 45°
0
Humidity: 91%
Wind: 5 mph
UV Index: 1
11 AM
Foggy Weather
46°
Feels Like 46°
0
Humidity: 83%
Wind: 5 mph
UV Index: 1
12 PM
Foggy Weather
50°
Feels Like 52°
0
Humidity: 77%
Wind: 5 mph
UV Index: 1
1 PM
Cloudy Weather
54°
Feels Like 57°
0
Humidity: 72%
Wind: 5 mph
UV Index: 2
2 PM
Cloudy Weather
55°
Feels Like 57°
0
Humidity: 67%
Wind: 5 mph
UV Index: 2
3 PM
Cloudy Weather
54°
Feels Like 57°
0
Humidity: 73%
Wind: 5 mph
UV Index: 1
4 PM
Cloudy Weather
52°
Feels Like 54°
0
Humidity: 81%
Wind: 4 mph
UV Index: 1
5 PM
Cloudy Night
48°
Feels Like 48°
0
Humidity: 90%
Wind: 4 mph
UV Index: 0
6 PM
Cloudy Night
46°
Feels Like 46°
0
Humidity: 97%
Wind: 4 mph
UV Index: 0
7 PM
Cloudy Night
43°
Feels Like 45°
0
Humidity: 100%
Wind: 4 mph
UV Index: 0
8 PM
Cloudy Night
43°
Feels Like 43°
0
Humidity: 100%
Wind: 4 mph
UV Index: 0
9 PM
Cloudy Night
41°
Feels Like 39°
0
Humidity: 100%
Wind: 5 mph
UV Index: 0
10 PM
Cloudy Night
41°
Feels Like 39°
0
Humidity: 100%
Wind: 5 mph
UV Index: 0
11 PM
Cloudy Night
41°
Feels Like 41°
0
Humidity: 100%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

6 AM
64 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 18.7 µg/m³
  • PM10: 24.68 µg/m³
  • O3: 0.039 ppm
  • NO2: 3.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

7 AM
62 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 17.42 µg/m³
  • PM10: 22.92 µg/m³
  • O3: 0.039 ppm
  • NO2: 3.1 ppb
  • SO2: 0.6 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

8 AM
60 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 16.48 µg/m³
  • PM10: 21.58 µg/m³
  • O3: 0.039 ppm
  • NO2: 3 ppb
  • SO2: 0.6 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

9 AM
59 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 16.36 µg/m³
  • PM10: 21.29 µg/m³
  • O3: 0.039 ppm
  • NO2: 3.3 ppb
  • SO2: 0.6 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

10 AM
60 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 16.69 µg/m³
  • PM10: 21.53 µg/m³
  • O3: 0.039 ppm
  • NO2: 3.2 ppb
  • SO2: 0.6 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

11 AM
59 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 16.41 µg/m³
  • PM10: 20.96 µg/m³
  • O3: 0.040 ppm
  • NO2: 2.8 ppb
  • SO2: 0.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 16.33 µg/m³
  • PM10: 20.67 µg/m³
  • O3: 0.041 ppm
  • NO2: 2.8 ppb
  • SO2: 0.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 16.3 µg/m³
  • PM10: 20.49 µg/m³
  • O3: 0.043 ppm
  • NO2: 2.8 ppb
  • SO2: 0.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 15.98 µg/m³
  • PM10: 19.97 µg/m³
  • O3: 0.045 ppm
  • NO2: 2.8 ppb
  • SO2: 0.7 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 15.69 µg/m³
  • PM10: 19.51 µg/m³
  • O3: 0.046 ppm
  • NO2: 2.8 ppb
  • SO2: 0.7 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 15.26 µg/m³
  • PM10: 18.95 µg/m³
  • O3: 0.046 ppm
  • NO2: 3 ppb
  • SO2: 0.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 15.04 µg/m³
  • PM10: 18.66 µg/m³
  • O3: 0.046 ppm
  • NO2: 3.3 ppb
  • SO2: 0.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 15.17 µg/m³
  • PM10: 18.76 µg/m³
  • O3: 0.045 ppm
  • NO2: 3.3 ppb
  • SO2: 0.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 15.44 µg/m³
  • PM10: 19 µg/m³
  • O3: 0.044 ppm
  • NO2: 3 ppb
  • SO2: 0.7 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 15.66 µg/m³
  • PM10: 19.2 µg/m³
  • O3: 0.044 ppm
  • NO2: 2.8 ppb
  • SO2: 0.7 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 16.02 µg/m³
  • PM10: 19.56 µg/m³
  • O3: 0.042 ppm
  • NO2: 2.6 ppb
  • SO2: 0.7 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 16.2 µg/m³
  • PM10: 19.76 µg/m³
  • O3: 0.041 ppm
  • NO2: 2.5 ppb
  • SO2: 0.7 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 16.1 µg/m³
  • PM10: 19.6 µg/m³
  • O3: 0.041 ppm
  • NO2: 2.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Santa Rosa

Moderate Expected Likely

Dense Fog Advisory

Dense Fog Advisory issued December 13 at 9:01PM PST until December 14 at 11:00AM PST by NWS San Francisco CA
Dec 13, 9:01 PM → Dec 14, 11:00 AM
WHAT: Visibility one quarter mile or less in dense fog.

WHERE: East Bay Interior Valleys and North Bay Interior Valleys.

WHEN: Until 11 AM PST Sunday.

IMPACTS: Low visibility could make driving conditions hazardous.
+ Read More
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Updated: Dec 14, 4:01 AM Source: NWS Alert