Beach Hazards Statement — San Francisco, CA, Coastal North Bay Including Point Reyes National Seashore, CA, San Francisco Peninsula Coast, CA, Northern Monterey Bay, CA, Southern Monterey Bay and Big Sur Coast, CA 1:00 AM

San Francisco, California

Last updated: 9:58 AM CDT  ·  Refresh
14°C
Feels like 15°
Mostly Clear
▲ 24°  /  ▼ 13°
Wind
2 mph E
Humidity
89%
Dew Point
13°
Pressure
29.86 inHg
Visibility
10 mi
UV Index
3.5
Cloud Cover
22%
Sunrise
6:44 AM
Sunset
7:29 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: San Francisco is currently mostly clear at 15°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:44AM · Sunset: 7:29PM.

Alerts

Beach Hazards Statement
San Francisco, CA, Coastal North Bay Including Point Reyes National Seashore, CA, San Francisco Peninsula Coast, CA, Northern Monterey Bay, CA, Southern Monterey Bay and Big Sur Coast, CA
Expires 1:00 AM
47 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
14°
17%
8 AM
16°
5%
9 AM
18°
3%
10 AM
19°
3%
11 AM
21°
3%
12 PM
22°
3%
1 PM
24°
3%
2 PM
24°
3%
3 PM
23°
3%
4 PM
22°
3%
5 PM
21°
3%
6 PM
21°
7%
7 PM
20°
6%
8 PM
19°
6%
9 PM
18°
6%
10 PM
18°
6%
11 PM
17°
6%
12 AM
17°
16%
1 AM
17°
16%
2 AM
17°
16%
3 AM
16°
16%
4 AM
16°
16%
5 AM
16°
16%
6 AM
16°
16%
7-Day Forecast
Today
24° 13°
Clear.
Tue
26° 16°
Fog.
Wed
30° 19°
Mostly Clear.
Thu
26° 16°
Partly Cloudy.
Fri
24° 15°
Clear.
Sat
23° 14°
Clear.
Sun
25° 14°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 14° Mostly Clear 17% 2 mph E 89%
8 AM 16° Clear 5% 2 mph E 79%
9 AM 18° Clear 3% 3 mph NE 71%
10 AM 19° Clear 3% 3 mph NE 64%
11 AM 21° Clear 3% 2 mph NNE 59%
12 PM 22° Clear 3% 3 mph NW 55%
1 PM 24° Clear 3% 5 mph WNW 52%
2 PM 24° Clear 3% 8 mph W 55%
3 PM 23° Clear 3% 10 mph W 60%
4 PM 22° Clear 3% 12 mph W 64%
5 PM 21° Clear 3% 10 mph W 65%
6 PM 21° Mostly Clear 7% 9 mph W 67%
7 PM 20° Mostly Clear 6% 7 mph W 68%
8 PM 19° Mostly Clear 6% 5 mph W 70%
9 PM 18° Mostly Clear 6% 5 mph WSW 72%
10 PM 18° Fog 6% 4 mph SW 73%
11 PM 17° Fog 6% 4 mph SW 75%
12 AM 17° Fog 16% 4 mph SW 76%
1 AM 17° Fog 16% 4 mph SW 78%
2 AM 17° Fog 16% 4 mph SW 78%
3 AM 16° Fog 16% 3 mph SW 79%
4 AM 16° Fog 16% 3 mph SW 79%
5 AM 16° Fog 16% 2 mph SW 79%
6 AM 16° Fog 16% 2 mph SW 78%
15-Day Forecast
Today
9/7
Clear
17%
13°
24°
Tue
9/8
Fog
17%
16°
26°
Wed
9/9
Mostly Clear
3%
19°
30°
Thu
9/10
Partly Cloudy
3%
16°
26°
Fri
9/11
Clear
3%
15°
24°
Sat
9/12
Clear
3%
14°
23°
Sun
9/13
Clear
3%
14°
25°
Mon
9/14
Clear
3%
14°
24°
Tue
9/15
Clear
3%
15°
24°
Wed
9/16
Clear
3%
15°
24°
Thu
9/17
Clear
3%
14°
27°
Fri
9/18
Clear
3%
14°
26°
Sat
9/19
Clear
25%
14°
26°
Sun
9/20
Clear
3%
14°
27°
Mon
9/21
Clear
25%
14°
28°
47
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
47 AQI 8.5 µg/m³
O3
Ground-level ozone
27 AQI 30 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 47 Good 27 47
Wed 54 Moderate 32 54
Thu 55 Moderate 35 55
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Mon Sep 7, 13:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE28 J/kg
MUCAPE0 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index12.1
Kinematics
0–6 km Shear22 kt
0–1 km Shear5 kt
Eff. Shear—
0–1 km SRH-17
0–3 km SRH58
Eff. SRH—
Storm Motion348° @ 17 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index-5.1
Thermo & Levels
PWAT0.67 in
0–3 km LR2.4 °C/km
700–500 LR5.8 °C/km
Total Totals30.8
LCL987 hPa
LFC—
EL—
Freezing Lvl15,200 ft