Water Temperature of San Francisco Bay in San Mateo, CA
Current Water Temperature
Measurement Time: Wednesday, March 4, 2020, 11:45 PM PST
Temperature Locations
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Local Points of Interest
San Mateo-Hayward Bridge; Foster City, CA; Burlingame, CA; Hayward, CASponsored Content
Station Name: SAN FRANCISCO BAY 2.8 MI N OF SAN MATEO BRIDGE CA
Data Source: Water Data - usgc.gov
Elevation Above Sea Level: 0 feet / 0 meters
Nearest Address:
San Francisco Bay
San Mateo, CA 94401
San Mateo County
GPS Coordinates: 37.63078889, -122.2432
Nearby Water Temperatures
Redwood Creek, Redwood City, CA (8.8 mi)San Francisco Bay, Alameda, CA (10.2 mi)
San Francisco Bay, Menlo Park, CA (11.0 mi)
San Francisco Bay, San Francisco, CA (14.6 mi)
Coyote Creek, Alviso, CA (16.6 mi)
San Francisco Bay, San Francisco, CA (16.7 mi)
San Francisco Bay, San Francisco, CA (17.2 mi)
Rodeo Pond, Sausalito, CA (20.7 mi)
Rodeo Lagoon, Sausalito, CA (20.8 mi)
Rodeo Lagoon, Sausalito, CA (21.0 mi)
San Francisco Bay, Richmond, CA (22.3 mi)
Coyote Creek, San Jose, CA (22.5 mi)
San Francisco Bay, San Rafael, CA (23.8 mi)
Arroyo Valle, Livermore, CA (26.5 mi)
Arroyo Hondo, San Jose, CA (28.5 mi)
Weather for San Mateo, California
Current Weather

Humidity: 94%
Feels Like: 64.9°F
Wind: SW 2.7 mph
Wind Gusts: 3.9 mph
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 6 mi
UV Index: 0
Five Day Weather Forecast

Wed
H: 73°F
L: 60°F

Thu
H: 61°F
L: 58°F

Fri
H: 62°F
L: 57°F

Sat
H: 70°F
L: 58°F

Sun
H: 70°F
L: 59°F
Air Quality
Nitrogen Dioxide: 7.4 μg/m3
Sulphur Dioxide: 2.96 μg/m3
Ozone: 56 μg/m3
Astronomical
Sun Transit: 1:05 PM
Sunset: 7:24 PM
Daylight: 12 hrs 36 mins
Moon Transit: 3:14 AM
Moonset: 10:13 AM
Moon Phase: Waning Gibbous
Moon Illumination: 86.2%
Best Times for Fishing or Hunting
Major Periods
2:44 AM - 5:14 AM10:43 AM - 1:13 PM
Minor Periods
8:29 PM - 9:59 PM9:43 AM - 11:13 AM
Action Rating: 2 out of 5
Air Quality Alert issued September 3 at 4:06PM PDT by NWS Hanford CA
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Wed September 3, 2025, 4:06 PM
Expires: Wed September 10, 2025, 4:15 PM
The Valley Air District is issuing an Air Quality Alert on September 3, 2025, due to smoke impacts from wildfires in California including the Garnet Fire, the Marmon Fire, the Salt 11-2 Fire, and the TCU September Lightning Complex for San Joaquin, Stanislaus, Merced, Madera, Fresno, Kings, Tulare, and the Valley portion of Kern Counties. This Air Quality Alert is in effect until the fires are extinguished. Exposure to particle pollution can cause serious health problems, aggravate lung disease, cause asthma attacks and acute bronchitis, and increase risk of respiratory infections. Residents are advised to use caution as conditions warrant. People with heart or lung diseases should follow their doctors advice for dealing with episodes of unhealthy air quality. Additionally, older adults and children should avoid prolonged exposure, strenuous activities or heavy exertion, as conditions dictate. For additional information, call your local San Joaquin Valley Air District office. Modesto 209-557-6400, Fresno 559-230-6000, Bakersfield 661-392-5500 Residents can also follow air quality conditions by downloading the free Valley Air app, available in the Apple store or Google Play.
Air Quality Alert issued September 4 at 8:01AM PDT by NWS Hanford CA
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Thu September 4, 2025, 8:01 AM
Expires: Thu September 11, 2025, 8:15 AM
The Valley Air District is issuing an Air Quality Alert on September 3, 2025, due to smoke impacts from wildfires in California including the Garnet Fire, the Marmon Fire, the Salt 11-2 Fire, and the TCU September Lightning Complex for San Joaquin, Stanislaus, Merced, Madera, Fresno, Kings, Tulare, and the Valley portion of Kern Counties. This Air Quality Alert is in effect until the fires are extinguished. Exposure to particle pollution can cause serious health problems, aggravate lung disease, cause asthma attacks and acute bronchitis, and increase risk of respiratory infections. Residents are advised to use caution as conditions warrant. People with heart or lung diseases should follow their doctors advice for dealing with episodes of unhealthy air quality. Additionally, older adults and children should avoid prolonged exposure, strenuous activities or heavy exertion, as conditions dictate. For additional information, call your local San Joaquin Valley Air District office. Modesto 209-557-6400, Fresno 559-230-6000, Bakersfield 661-392-5500 Residents can also follow air quality conditions by downloading the free Valley Air app, available in the Apple store or Google Play, or by visiting the AirNow Fire and Smoke Map at fire.airnow.gov.
Air Quality Alert issued September 3 at 4:06PM PDT by NWS Hanford CA
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Wed September 3, 2025, 4:06 PM
Expires: Wed September 10, 2025, 4:15 PM
The Valley Air District is issuing an Air Quality Alert on September 3, 2025, due to smoke impacts from wildfires in California including the Garnet Fire, the Marmon Fire, the Salt 11-2 Fire, and the TCU September Lightning Complex for San Joaquin, Stanislaus, Merced, Madera, Fresno, Kings, Tulare, and the Valley portion of Kern Counties. This Air Quality Alert is in effect until the fires are extinguished. Exposure to particle pollution can cause serious health problems, aggravate lung disease, cause asthma attacks and acute bronchitis, and increase risk of respiratory infections. Residents are advised to use caution as conditions warrant. People with heart or lung diseases should follow their doctors advice for dealing with episodes of unhealthy air quality. Additionally, older adults and children should avoid prolonged exposure, strenuous activities or heavy exertion, as conditions dictate. For additional information, call your local San Joaquin Valley Air District office. Modesto 209-557-6400, Fresno 559-230-6000, Bakersfield 661-392-5500 Residents can also follow air quality conditions by downloading the free Valley Air app, available in the Apple store or Google Play.
Air Quality Alert issued September 4 at 8:01AM PDT by NWS Hanford CA
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Thu September 4, 2025, 8:01 AM
Expires: Thu September 11, 2025, 8:15 AM
The Valley Air District is issuing an Air Quality Alert on September 3, 2025, due to smoke impacts from wildfires in California including the Garnet Fire, the Marmon Fire, the Salt 11-2 Fire, and the TCU September Lightning Complex for San Joaquin, Stanislaus, Merced, Madera, Fresno, Kings, Tulare, and the Valley portion of Kern Counties. This Air Quality Alert is in effect until the fires are extinguished. Exposure to particle pollution can cause serious health problems, aggravate lung disease, cause asthma attacks and acute bronchitis, and increase risk of respiratory infections. Residents are advised to use caution as conditions warrant. People with heart or lung diseases should follow their doctors advice for dealing with episodes of unhealthy air quality. Additionally, older adults and children should avoid prolonged exposure, strenuous activities or heavy exertion, as conditions dictate. For additional information, call your local San Joaquin Valley Air District office. Modesto 209-557-6400, Fresno 559-230-6000, Bakersfield 661-392-5500 Residents can also follow air quality conditions by downloading the free Valley Air app, available in the Apple store or Google Play, or by visiting the AirNow Fire and Smoke Map at fire.airnow.gov.
Weather Forecast
Average Temperature: 64.2°F
Average Humidity: 87%
Wind: 9.6 mph
UV Index: 1.4
Air Quality
Nitrogen Dioxide: 12.6 μg/m3
Sulphur Dioxide: 2.7 μg/m3
Ozone: 46.12 μg/m3
Astronomical
Sun Transit: 1:05 PM
Sunset: 7:24 PM
Daylight: 12 hrs 36 mins
Moon Transit: 3:14 AM
Moonset: 10:13 AM
Moon Phase: Waning Gibbous
Moon Illumination: 86.2%
Best Times for Fishing or Hunting
Major Periods
2:44 AM - 5:14 AM10:43 AM - 1:13 PM
Minor Periods
8:29 PM - 9:59 PM9:43 AM - 11:13 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 59.7°F
Average Humidity: 89%
Wind: 9.4 mph
UV Index: 1.5
Air Quality
Nitrogen Dioxide: 10.06 μg/m3
Sulphur Dioxide: 3.09 μg/m3
Ozone: 64.96 μg/m3
Astronomical
Sun Transit: 1:05 PM
Sunset: 7:22 PM
Daylight: 12 hrs 34 mins
Moon Transit: 4:07 AM
Moonset: 11:28 AM
Moon Phase: Waning Gibbous
Moon Illumination: 77.5%
Best Times for Fishing or Hunting
Major Periods
3:37 AM - 6:07 AM11:37 AM - 2:07 PM
Minor Periods
9:04 PM - 10:34 PM10:58 AM - 12:28 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 59.5°F
Average Humidity: 90%
Wind: 8.9 mph
UV Index: 1.4
Air Quality
Nitrogen Dioxide: 12.51 μg/m3
Sulphur Dioxide: 3.8 μg/m3
Ozone: 57.36 μg/m3
Astronomical
Sun Transit: 1:05 PM
Sunset: 7:20 PM
Daylight: 12 hrs 32 mins
Moon Transit: 5:04 AM
Moonset: 12:45 AM
Moon Phase: Waning Gibbous
Moon Illumination: 67.4%
Best Times for Fishing or Hunting
Major Periods
4:34 AM - 7:04 AM12:35 AM - 3:05 PM
Minor Periods
9:48 PM - 11:18 PM12:15 AM - 1:45 PM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 63°F
Average Humidity: 82%
Wind: 9.8 mph
UV Index: 1.5
Air Quality
Nitrogen Dioxide: 11.5 μg/m3
Sulphur Dioxide: 3.36 μg/m3
Ozone: 53.2 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 7:19 PM
Daylight: 12 hrs 29 mins
Moon Transit: 6:04 AM
Moonset: 1:58 PM
Moon Phase: Waning Gibbous
Moon Illumination: 56.4%
Best Times for Fishing or Hunting
Major Periods
5:34 AM - 8:04 AM1:36 PM - 4:06 PM
Minor Periods
12:00 AM - 12:00 AM1:28 PM - 2:58 PM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 63.7°F
Average Humidity: 84%
Wind: 9.8 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 11.87 μg/m3
Sulphur Dioxide: 2.39 μg/m3
Ozone: 42.77 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 7:17 PM
Daylight: 12 hrs 27 mins
Moon Transit: 7:06 AM
Moonset: 3:05 PM
Moon Phase: Last Quarter
Moon Illumination: 45.1%
Best Times for Fishing or Hunting
Major Periods
6:36 AM - 9:06 AM2:38 PM - 5:08 PM
Minor Periods
2:35 PM - 4:05 PM12:00 AM - 12:00 AM
Action Rating: 3 out of 5