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Today Hourly 7 days 30 days Air Quality
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Hourly Weather | Today › Thursday, February 26, 2026
Active Weather Warnings
Santa Rosa, California
2 AM
Foggy Weather
54°
Feels Like 54°
0
Humidity: 92%
UV Index: 0
Wind: 4 mph
3 AM
Foggy Weather
54°
Feels Like 54°
0
Humidity: 93%
UV Index: 0
Wind: 4 mph
4 AM
Foggy Weather
54°
Feels Like 52°
0
Humidity: 94%
UV Index: 0
Wind: 4 mph
5 AM
Foggy Weather
54°
Feels Like 52°
0
Humidity: 95%
UV Index: 0
Wind: 4 mph
6 AM
Foggy Weather
52°
Feels Like 52°
0
Humidity: 96%
UV Index: 0
Wind: 4 mph
7 AM
Foggy Weather
52°
Feels Like 52°
0
Humidity: 100%
UV Index: 0
Wind: 4 mph
8 AM
Foggy Weather
52°
Feels Like 54°
0
Humidity: 93%
UV Index: 1
Wind: 2 mph
9 AM
Foggy Weather
55°
Feels Like 57°
0
Humidity: 95%
UV Index: 1
Wind: 2 mph
10 AM
Foggy Weather
59°
Feels Like 63°
0
Humidity: 87%
UV Index: 1
Wind: 2 mph
11 AM
Foggy Weather
63°
Feels Like 64°
0
Humidity: 79%
UV Index: 2
Wind: 4 mph
12 PM
Foggy Weather
64°
Feels Like 66°
0
Humidity: 72%
UV Index: 2
Wind: 5 mph
1 PM
Cloudy Weather
66°
Feels Like 72°
0
Humidity: 67%
UV Index: 4
Wind: 5 mph
2 PM
Cloudy Weather
70°
Feels Like 72°
0
Humidity: 64%
UV Index: 3
Wind: 5 mph
3 PM
Cloudy Weather
70°
Feels Like 72°
0
Humidity: 61%
UV Index: 2
Wind: 6 mph
4 PM
Cloudy Weather
70°
Feels Like 70°
0
Humidity: 65%
UV Index: 1
Wind: 6 mph
5 PM
Cloudy Weather
66°
Feels Like 66°
0
Humidity: 69%
UV Index: 1
Wind: 5 mph
6 PM
Cloudy Weather
64°
Feels Like 64°
0
Humidity: 76%
UV Index: 0
Wind: 5 mph
7 PM
Cloudy Night
63°
Feels Like 63°
0
Humidity: 81%
UV Index: 0
Wind: 4 mph
8 PM
Cloudy Night
59°
Feels Like 61°
0
Humidity: 87%
UV Index: 0
Wind: 4 mph
9 PM
Cloudy Night
57°
Feels Like 57°
0
Humidity: 92%
UV Index: 0
Wind: 4 mph
10 PM
Cloudy Night
54°
Feels Like 54°
0
Humidity: 98%
UV Index: 0
Wind: 4 mph
11 PM
Cloudy Night
54°
Feels Like 54°
0
Humidity: 96%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

2 AM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.62 µg/m³
  • PM10: 5.33 µg/m³
  • O3: 0.028 ppm
  • NO2: 1.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

3 AM
25 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.64 µg/m³
  • PM10: 5.39 µg/m³
  • O3: 0.028 ppm
  • NO2: 1.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

4 AM
25 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.66 µg/m³
  • PM10: 5.43 µg/m³
  • O3: 0.027 ppm
  • NO2: 1.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

5 AM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.68 µg/m³
  • PM10: 5.43 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

6 AM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.7 µg/m³
  • PM10: 5.42 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

7 AM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.72 µg/m³
  • PM10: 5.44 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

8 AM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.76 µg/m³
  • PM10: 5.49 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

9 AM
25 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.85 µg/m³
  • PM10: 5.59 µg/m³
  • O3: 0.027 ppm
  • NO2: 1.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

10 AM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.04 µg/m³
  • PM10: 5.77 µg/m³
  • O3: 0.028 ppm
  • NO2: 1.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

11 AM
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.31 µg/m³
  • PM10: 6.02 µg/m³
  • O3: 0.030 ppm
  • NO2: 1.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

12 PM
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.71 µg/m³
  • PM10: 6.45 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

1 PM
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.25 µg/m³
  • PM10: 6.96 µg/m³
  • O3: 0.037 ppm
  • NO2: 1 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

2 PM
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.56 µg/m³
  • PM10: 7.2 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

3 PM
41 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.52 µg/m³
  • PM10: 7.13 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

4 PM
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.37 µg/m³
  • PM10: 6.99 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

5 PM
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.27 µg/m³
  • PM10: 6.96 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

6 PM
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.19 µg/m³
  • PM10: 6.98 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

7 PM
41 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.16 µg/m³
  • PM10: 7.08 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

8 PM
41 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.07 µg/m³
  • PM10: 7.06 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

9 PM
40 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.92 µg/m³
  • PM10: 6.91 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.68 µg/m³
  • PM10: 6.52 µg/m³
  • O3: 0.043 ppm
  • NO2: 1 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.43 µg/m³
  • PM10: 6.11 µg/m³
  • O3: 0.044 ppm
  • NO2: 1 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Santa Rosa

Moderate Expected Likely

Dense Fog Advisory

Dense Fog Advisory issued February 25 at 11:40PM PST until February 26 at 11:00AM PST by NWS San Francisco CA
Feb 25, 11:40 PM → Feb 26, 11:00 AM
WHAT: Visibility one quarter mile or less in dense fog.

WHERE: North Bay Interior Valleys.

WHEN: Until 11 AM PST Thursday.

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: Feb 26, 12:11 AM Source: NWS Alert