What is the weather in San Bruno right now?

Current weather in San Bruno is fog.

Where can I find the hourly weather forecast for San Bruno?

This page shows hourly weather forecast for San Bruno, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for San Bruno updated regularly?

Weather data for San Bruno is updated regularly with the latest available observations and forecasts.

Now · 5:47 AM

San Bruno Weather & Hourly Forecast

United States · California · 94066

53°F

Fog at night

Feels like: 53°F

💧 Humidity 99% 🌡 Pressure 29.97 inHg 💨 Wind 3 mph 👁 Visibility 0.6 mi ☁ Clouds 57% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for San Bruno

Today

6:00 AM

Fog at night

53° 💧 None 💨 3 mph H 99%29.97 inHg

9:00 AM

Sunny

61° 💧 None 💨 2 mph H 81%30.00 inHg

12:00 PM

Sunny

75° 💧 None 💨 2 mph H 42%29.97 inHg

3:00 PM

Mostly sunny

78° 💧 None 💨 6 mph H 41%29.94 inHg

6:00 PM

Mostly sunny

69° 💧 None 💨 8 mph H 56%29.91 inHg

9:00 PM

Clear night

63° 💧 None 💨 6 mph H 68%29.94 inHg

Tomorrow

12:00 AM

Clear night

60° 💧 None 💨 3 mph H 76%29.94 inHg

3:00 AM

Clear night

56° 💧 None 💨 3 mph H 86%29.91 inHg

6:00 AM

Clear night

55° 💧 None 💨 4 mph H 92%29.94 inHg

9:00 AM

Sunny

65° 💧 None 💨 1 mph H 62%30.00 inHg

12:00 PM

Sunny

78° 💧 None 💨 3 mph H 39%30.00 inHg

3:00 PM

Mostly sunny

82° 💧 None 💨 7 mph H 35%29.97 inHg

6:00 PM

Partly cloudy

72° 💧 None 💨 7 mph H 47%29.94 inHg

9:00 PM

Overcast night

65° 💧 None 💨 4 mph H 62%29.97 inHg

Wednesday

12:00 AM

Overcast night

64° 💧 None 💨 4 mph H 71%30.00 inHg

3:00 AM

Overcast night

64° 💧 None 💨 2 mph H 68%30.00 inHg

Today

6:00 AM

Fog at night

53° 💧 None 💨 3 mph H 99%29.97 inHg

7:00 AM

Fog

53° 💧 None 💨 2 mph H 99%29.97 inHg

8:00 AM

Sunny

56° 💧 None 💨 2 mph H 97%30.00 inHg

9:00 AM

Sunny

61° 💧 None 💨 2 mph H 81%30.00 inHg

10:00 AM

Sunny

66° 💧 None 💨 2 mph H 67%30.00 inHg

11:00 AM

Sunny

71° 💧 None 💨 2 mph H 51%30.00 inHg

12:00 PM

Sunny

75° 💧 None 💨 2 mph H 42%29.97 inHg

1:00 PM

Sunny

78° 💧 None 💨 1 mph H 35%29.97 inHg

2:00 PM

Mostly sunny

80° 💧 None 💨 3 mph H 34%29.94 inHg

3:00 PM

Mostly sunny

78° 💧 None 💨 6 mph H 41%29.94 inHg

4:00 PM

Mostly sunny

74° 💧 None 💨 7 mph H 49%29.91 inHg

5:00 PM

Mostly sunny

72° 💧 None 💨 8 mph H 54%29.91 inHg

6:00 PM

Mostly sunny

69° 💧 None 💨 8 mph H 56%29.91 inHg

7:00 PM

Sunny

66° 💧 None 💨 8 mph H 63%29.91 inHg

8:00 PM

Clear night

63° 💧 None 💨 7 mph H 67%29.91 inHg

9:00 PM

Clear night

63° 💧 None 💨 6 mph H 68%29.94 inHg

10:00 PM

Clear night

62° 💧 None 💨 5 mph H 68%29.94 inHg

11:00 PM

Clear night

61° 💧 None 💨 4 mph H 70%29.94 inHg

Tomorrow

12:00 AM

Clear night

60° 💧 None 💨 3 mph H 76%29.94 inHg

1:00 AM

Clear night

58° 💧 None 💨 3 mph H 81%29.94 inHg

2:00 AM

Clear night

57° 💧 None 💨 3 mph H 84%29.91 inHg

3:00 AM

Clear night

56° 💧 None 💨 3 mph H 86%29.91 inHg

4:00 AM

Clear night

56° 💧 None 💨 5 mph H 86%29.94 inHg

5:00 AM

Clear night

56° 💧 None 💨 5 mph H 88%29.94 inHg

6:00 AM

Clear night

55° 💧 None 💨 4 mph H 92%29.94 inHg

7:00 AM

Sunny

55° 💧 None 💨 3 mph H 91%29.97 inHg

8:00 AM

Sunny

59° 💧 None 💨 4 mph H 78%30.00 inHg

9:00 AM

Sunny

65° 💧 None 💨 1 mph H 62%30.00 inHg

10:00 AM

Sunny

70° 💧 None 💨 1 mph H 51%30.00 inHg

11:00 AM

Sunny

74° 💧 None 💨 2 mph H 44%30.00 inHg

12:00 PM

Sunny

78° 💧 None 💨 3 mph H 39%30.00 inHg

1:00 PM

Sunny

81° 💧 None 💨 3 mph H 35%29.97 inHg

2:00 PM

Mostly sunny

83° 💧 None 💨 4 mph H 32%29.97 inHg

3:00 PM

Mostly sunny

82° 💧 None 💨 7 mph H 35%29.97 inHg

4:00 PM

Partly cloudy

78° 💧 None 💨 8 mph H 41%29.94 inHg

5:00 PM

Mostly cloudy

75° 💧 None 💨 8 mph H 43%29.94 inHg

6:00 PM

Partly cloudy

72° 💧 None 💨 7 mph H 47%29.94 inHg

7:00 PM

Partly cloudy

69° 💧 None 💨 6 mph H 54%29.94 inHg

8:00 PM

Fog at night

66° 💧 None 💨 5 mph H 60%29.97 inHg

9:00 PM

Overcast night

65° 💧 None 💨 4 mph H 62%29.97 inHg

10:00 PM

Overcast night

65° 💧 None 💨 4 mph H 66%30.00 inHg

11:00 PM

Overcast night

64° 💧 None 💨 4 mph H 69%30.00 inHg

Wednesday

12:00 AM

Overcast night

64° 💧 None 💨 4 mph H 71%30.00 inHg

1:00 AM

Overcast night

64° 💧 None 💨 2 mph H 70%30.00 inHg

2:00 AM

Overcast night

64° 💧 None 💨 2 mph H 70%30.00 inHg

3:00 AM

Overcast night

64° 💧 None 💨 2 mph H 68%30.00 inHg

4:00 AM

Overcast night

64° 💧 None 💨 2 mph H 68%30.00 inHg

5:00 AM

Overcast night

65° 💧 None 💨 0 mph H 69%30.00 inHg

6:00 AM

Overcast night

65° 💧 None 💨 1 mph H 68%30.00 inHg

7:00 AM

Overcast

65° 💧 None 💨 1 mph H 68%30.00 inHg

8:00 AM

Overcast

67° 💧 None 💨 1 mph H 61%30.03 inHg

9:00 AM

Overcast

72° 💧 None 💨 1 mph H 51%30.03 inHg

10:00 AM

Overcast

78° 💧 None 💨 2 mph H 40%30.03 inHg

11:00 AM

Mostly cloudy

82° 💧 None 💨 2 mph H 33%30.03 inHg

12:00 PM

Overcast

86° 💧 None 💨 3 mph H 27%30.03 inHg

1:00 PM

Partly cloudy

88° 💧 None 💨 5 mph H 26%30.03 inHg

2:00 PM

Mostly cloudy

86° 💧 None 💨 7 mph H 27%30.00 inHg

3:00 PM

Mostly cloudy

85° 💧 None 💨 7 mph H 27%30.00 inHg

4:00 PM

Overcast

84° 💧 None 💨 8 mph H 28%29.97 inHg

5:00 PM

Overcast

82° 💧 None 💨 8 mph H 31%29.97 inHg

Thursday

2:00 AM

Clear night

64° 💧 None 💨 7 mph H 75%29.97 inHg

5:00 AM

Mostly cloudy night

63° 💧 None 💨 8 mph H 82%29.97 inHg

8:00 AM

Partly cloudy

63° 💧 None 💨 9 mph H 84%30.00 inHg

11:00 AM

Mostly sunny

66° 💧 None 💨 10 mph H 77%30.00 inHg

2:00 PM

Partly cloudy

64° 💧 None 💨 13 mph H 82%29.97 inHg

5:00 PM

Mostly sunny

63° 💧 None 💨 14 mph H 87%29.94 inHg

8:00 PM

Mostly cloudy night

61° 💧 None 💨 13 mph H 90%29.94 inHg

11:00 PM

Mostly cloudy night

60° 💧 None 💨 12 mph H 91%29.94 inHg

Friday

2:00 AM

Overcast night

60° 💧 None 💨 11 mph H 92%29.94 inHg

5:00 AM

Overcast night

60° 💧 None 💨 10 mph H 94%29.91 inHg

8:00 AM

Overcast

60° 💧 None 💨 10 mph H 92%29.94 inHg

11:00 AM

Overcast

62° 💧 None 💨 11 mph H 84%29.94 inHg

2:00 PM

Mostly sunny

62° 💧 None 💨 14 mph H 82%29.94 inHg

5:00 PM

Partly cloudy

62° 💧 None 💨 15 mph H 86%29.88 inHg

8:00 PM

Mostly clear night

60° 💧 None 💨 14 mph H 90%29.88 inHg

11:00 PM

Mostly clear night

60° 💧 None 💨 12 mph H 88%29.91 inHg

Saturday

2:00 AM

Partly cloudy night

60° 💧 None 💨 14 mph H 88%29.91 inHg

5:00 AM

Mostly clear night

59° 💧 None 💨 15 mph H 91%29.91 inHg

8:00 AM

Mostly sunny

59° 💧 None 💨 12 mph H 88%29.94 inHg

11:00 AM

Mostly sunny

61° 💧 None 💨 14 mph H 81%29.97 inHg

2:00 PM

Mostly sunny

62° 💧 None 💨 16 mph H 78%29.97 inHg

5:00 PM

Mostly cloudy

61° 💧 None 💨 18 mph H 79%29.97 inHg

8:00 PM

Partly cloudy night

60° 💧 None 💨 15 mph H 84%29.94 inHg

11:00 PM

Clear night

59° 💧 None 💨 12 mph H 84%29.97 inHg

Sunday

5:00 AM

Overcast night

59° 💧 None 💨 13 mph H 86%29.97 inHg

11:00 AM

Partly cloudy

57° 💧 None 💨 10 mph H 91%29.94 inHg

5:00 PM

Sunny

64° 💧 None 💨 1 mph H 69%30.00 inHg

11:00 PM

Mostly clear night

63° 💧 None 💨 11 mph H 71%29.91 inHg

Monday

5:00 AM

Clear night

60° 💧 None 💨 5 mph H 82%29.91 inHg

11:00 AM

Sunny

57° 💧 None 💨 4 mph H 93%29.88 inHg

5:00 PM

Sunny

62° 💧 None 💨 7 mph H 80%29.91 inHg

11:00 PM

Partly cloudy night

60° 💧 None 💨 11 mph H 87%29.85 inHg

Tuesday

5:00 AM

Clear night

58° 💧 None 💨 8 mph H 92%29.88 inHg

11:00 AM

Partly cloudy

57° 💧 None 💨 8 mph H 93%29.91 inHg

5:00 PM

Partly cloudy

60° 💧 None 💨 11 mph H 82%29.97 inHg

11:00 PM

Mostly cloudy night

60° 💧 None 💨 16 mph H 87%29.94 inHg

Wednesday

5:00 AM

Overcast night

59° 💧 None 💨 13 mph H 92%30.00 inHg

11:00 AM

Overcast

58° 💧 None 💨 13 mph H 91%30.00 inHg

5:00 PM

Overcast

60° 💧 None 💨 10 mph H 86%30.06 inHg

11:00 PM

Clear night

61° 💧 None 💨 13 mph H 81%30.03 inHg

Thursday

5:00 AM

Mostly clear night

59° 💧 None 💨 7 mph H 93%30.06 inHg

11:00 AM

Partly cloudy

57° 💧 None 💨 9 mph H 94%30.06 inHg

5:00 PM

Mostly sunny

61° 💧 None 💨 10 mph H 79%30.12 inHg

11:00 PM

Clear night

61° 💧 None 💨 14 mph H 80%30.06 inHg

Friday

5:00 AM

Clear night

58° 💧 None 💨 10 mph H 89%30.09 inHg

11:00 AM

Mostly sunny

58° 💧 None 💨 9 mph H 84%30.06 inHg

5:00 PM

Mostly sunny

61° 💧 None 💨 10 mph H 81%30.09 inHg

11:00 PM

Clear night

61° 💧 None 💨 14 mph H 80%30.00 inHg

Saturday

5:00 AM

Clear night

58° 💧 None 💨 5 mph H 91%30.00 inHg

11:00 AM

Mostly sunny

57° 💧 None 💨 7 mph H 94%29.97 inHg

5:00 PM

Mostly sunny

61° 💧 None 💨 9 mph H 82%30.00 inHg

11:00 PM

Mostly clear night

60° 💧 None 💨 13 mph H 88%29.91 inHg

Sunday

5:00 AM

Overcast night

57° 💧 None 💨 10 mph H 96%29.94 inHg

11:00 AM

Overcast

57° 💧 None 💨 9 mph H 94%29.94 inHg

5:00 PM

Overcast

60° 💧 None 💨 8 mph H 86%30.00 inHg

11:00 PM

Overcast night

61° 💧 None 💨 12 mph H 85%29.94 inHg

Monday

5:00 AM

Overcast night

59° 💧 None 💨 10 mph H 91%30.00 inHg

11:00 AM

Mostly cloudy

59° 💧 None 💨 8 mph H 89%30.00 inHg

5:00 PM

Mostly cloudy

61° 💧 None 💨 8 mph H 82%30.09 inHg

11:00 PM

Mostly clear night

61° 💧 None 💨 13 mph H 82%30.03 inHg

In San Bruno and, more broadly, across the state of California: Clear skies are expected through the evening with temperatures remaining warm, ranging from 76 to 86 degrees Fahrenheit. Winds will be moderate from the northwest, blowing at up to 14 mph, with gusts reaching 30 mph at times. No rain is expected tonight, so it should stay dry throughout the next few hours. The breezy conditions may make it feel slightly cooler than the actual temperature, especially during gusts. Overall, it looks like a warm and clear evening with comfortable weather for outdoor activities.

15-Day Weather Outlook for San Bruno

TomorrowTomorrow

Mostly sunny 83°/55° 💧 None 💨 8 mph

Wednesday, Sep 9Wed Sep 9

Mostly cloudy 88°/64° 💧 None 💨 8 mph

Thursday, Sep 10Thu Sep 10

Overcast 82°/63° 💧 0.000 in 💨 13 mph

Friday, Sep 11Fri Sep 11

Overcast 63°/60° 💧 0.003 in 💨 14 mph

Saturday, Sep 12Sat Sep 12

Partly cloudy 62°/59° 💧 None 💨 16 mph

Sunday, Sep 13Sun Sep 13

Mostly cloudy 61°/57° 💧 None 💨 18 mph

Monday, Sep 14Mon Sep 14

Mostly sunny 64°/57° 💧 None 💨 11 mph

Tuesday, Sep 15Tue Sep 15

Partly cloudy 62°/57° 💧 None 💨 11 mph

Wednesday, Sep 16Wed Sep 16

Overcast 60°/58° 💧 0.005 in 💨 16 mph

Thursday, Sep 17Thu Sep 17

Overcast 61°/57° 💧 0.005 in 💨 13 mph

Friday, Sep 18Fri Sep 18

Mostly sunny 61°/58° 💧 None 💨 14 mph

Saturday, Sep 19Sat Sep 19

Mostly sunny 61°/57° 💧 None 💨 14 mph

Sunday, Sep 20Sun Sep 20

Overcast 61°/57° 💧 0.003 in 💨 13 mph

Monday, Sep 21Mon Sep 21

Overcast 61°/59° 💧 0.010 in 💨 12 mph

Tuesday, Sep 22Tue Sep 22

Mostly cloudy 61°/61° 💧 0.002 in 💨 13 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in San Bruno

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for San Bruno

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 6:00 AM

PM2.5 Fine particles Good 3,3µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 13,1µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 78,3µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 0,7µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in San Bruno

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 7,3High 🙂Fair

Tomorrow UV 7,8High 🙂Fair

Wednesday UV 7,2High 😐Moderate

Thursday UV 8,5Very high 🙂Fair

Friday UV 5,0Moderate 🙂Fair

Saturday UV 5,0Moderate —Unavailable

Sunday UV 5,0Moderate —Unavailable

Hourly UV index today

7:00 AMUV 0,0 8:00 AMUV 0,4 9:00 AMUV 1,3 10:00 AMUV 3,0 11:00 AMUV 4,9 12:00 PMUV 6,6 1:00 PMUV 7,3 2:00 PMUV 6,8 3:00 PMUV 5,4 4:00 PMUV 3,6 5:00 PMUV 1,8 6:00 PMUV 0,6

Today's weather health advice Open today's recommendations.

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for San Bruno

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · SAN BRUNO, CALIFORNIA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 10:00 PM–11:00 PM.

99/100Best-hour score

BEST TIME TONIGHT 10:00 PM–11:00 PM Astronomical darkness: 8:59 PM–5:16 AM

☁ Cloud cover 1% Real hourly forecast for the best viewing hour.

☾ Moonlight 14% Waning Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 12° high at the best hour.

✦ Estimated visible meteors 0–1/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min29%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for San Bruno were last refreshed today at 5:46 AM. The current forecast period extends through 09/09/2026 at 3:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.