Hourly Weather | Today › Wednesday, October 7, 2026
Active Weather Warnings
Santa Rosa, California
9 PM
Cloudy Night
66°
Feels Like 64°
0
Humidity: 63%
UV Index: 0
Wind: 4 mph
10 PM
Cloudy Night
63°
Feels Like 63°
0
Humidity: 74%
UV Index: 0
Wind: 4 mph
11 PM
Cloudy Night
59°
Feels Like 61°
0
Humidity: 81%
UV Index: 0
Wind: 2 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 9.85 µg/m³
  • PM10: 23.68 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.08 µg/m³
  • PM10: 23.87 µg/m³
  • O3: 0.043 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.

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

Pollutant Concentrations:

  • PM2.5: 10.23 µg/m³
  • PM10: 23.96 µg/m³
  • O3: 0.042 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.

Weather Alerts and Warnings for Santa Rosa

Moderate Expected Likely

Heat Advisory

Heat Advisory issued October 7 at 8:42AM PDT until October 8 at 10:00PM PDT by NWS San Francisco CA
Oct 7, 8:42 AM → Oct 8, 10:00 PM
WHAT: Hot conditions with maximum temperatures in the mid-90s to
near 105. Mild minimum temperatures and weak onshore flow will
limit overnight relief.

WHERE: The East Bay and San Francisco Bay Shoreline, North Bay
Interior Mountains and Valleys, The Santa Clara Valley and Eastern
Hills, The Santa Cruz Mountains, Interior Monterey County and the
Santa Lucia Range, Most of San Benito County and the Cholame Hills
in Southeast Monterey County, and Southern Salinas Valley/Arroyo
Seco and Lake San Antonio.

WHEN: Until 10 PM PDT Thursday.

IMPACTS: This level of heat affects anyone without effective
cooling and/or adequate hydration. Impacts likely in some health
systems, heat-sensitive industries and infrastructure.
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Hydration is a critical piece to surviving the heat. Drink water, and if possible, take water to those who are vulnerable. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to the early morning or evening. Take action when you experience symptoms of heat exhaustion and/or heat stroke. Beat the heat and check the backseat! Do not leave young children or pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
Updated: Oct 7, 7:15 PM Source: NWS Alert
Minor Expected Likely

Coastal Flood Advisory

Coastal Flood Advisory issued October 7 at 12:33PM PDT until October 14 at 4:00PM PDT by NWS San Francisco CA
Oct 7, 12:33 PM → Oct 14, 4:00 PM
WHAT: Up to 1.2 ft of inundation above ground level is
possible in low-lying areas near shorelines and tidal waterways.

WHERE: Bayshore locations along the San Pablo Bay.

WHEN: Until 4 PM PDT Wednesday.

IMPACTS: High tides will result in flooding of low-lying
infrastructure, isolated road closures, and coastal erosion.
Rising tides will bring water and waves farther up the beach
than normal, restricting escape from beaches and coastal areas.

ADDITIONAL DETAILS: At the San Francisco tidal gauge, high tide
is expected to be 1.0 ft above normal (6.78 ft MLLW) at 10:51 AM
Thursday 10/8, 1.0 ft above normal (6.86 ft MLLW) at 11:22 AM
Friday 10/9, 1.2 ft above normal (7.06 ft MLLW) at 11:50 AM
Saturday 10/10, 1.2 ft above normal (7.08 ft MLLW) at 12:18 PM
Sunday 10/11, 1.2 ft above normal (7.03 ft MLLW) at 12:46 PM
Monday 10/12, 1.1 ft above normal (6.90 ft MLLW) at 1:14 PM
Tuesday 10/13, and 0.9 ft above normal (6.72 ft MLLW) at 1:46
PM Wednesday 10/14. These predictions include up to 0.9 ft of
surge that will enhance the astronomical tide and flooding
threat. High tide varies up to 90 minutes earlier or later along
the Pacific Coast and through the San Francisco Bay,
respectively.
+ Read More
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.
Updated: Oct 7, 7:15 PM Source: NWS Alert