Heat Advisory — Coalinga - Avenal, CA, West Side of Fresno and Kings Counties, CA, Caruthers - San Joaquin - Selma, CA, Fresno-Clovis, CA, West Side Mountains South of 198, CA, Buttonwillow - Lost Hills - I5, CA, Delano-Wasco-Shafter, CA, Hanford - Corcoran - Lemoore, CA, Visalia - Porterville - Reedley, CA, Buena Vista, CA, Bakersfield, CA, Southeast San Joaquin Valley, CA, South End San Joaquin Valley, CA 1:00 AM

San Francisco, California

Last updated: 9:26 AM CDT  ·  Refresh
15°C
Feels like 13°
Mostly Cloudy
▲ 22°  /  ▼ 14°
Wind
8 mph W
Humidity
92%
Dew Point
14°
Pressure
29.95 inHg
Visibility
10 mi
UV Index
1.8
Cloud Cover
80%
Sunrise
6:33 AM
Sunset
7:48 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: San Francisco is currently mostly cloudy at 15°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:33AM · Sunset: 7:48PM.

Alerts

Heat Advisory
Coalinga - Avenal, CA, West Side of Fresno and Kings Counties, CA, Caruthers - San Joaquin - Selma, CA, Fresno-Clovis, CA, West Side Mountains South of 198, CA, Buttonwillow - Lost Hills - I5, CA, Delano-Wasco-Shafter, CA, Hanford - Corcoran - Lemoore, CA, Visalia - Porterville - Reedley, CA, Buena Vista, CA, Bakersfield, CA, Southeast San Joaquin Valley, CA, South End San Joaquin Valley, CA
Expires 1:00 AM
27 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
15°
26%
8 AM
14°
3%
9 AM
16°
3%
10 AM
16°
3%
11 AM
17°
3%
12 PM
18°
3%
1 PM
21°
3%
2 PM
21°
3%
3 PM
21°
3%
4 PM
21°
3%
5 PM
21°
3%
6 PM
20°
3%
7 PM
19°
3%
8 PM
19°
3%
9 PM
17°
3%
10 PM
17°
6%
11 PM
17°
6%
12 AM
16°
6%
1 AM
16°
6%
2 AM
15°
6%
3 AM
15°
6%
4 AM
15°
6%
5 AM
14°
6%
6 AM
14°
6%
7-Day Forecast
Today
22° 14°
Mostly Cloudy with a 26% chance of rain.
Wed
23° 14°
Fog.
Thu
24° 13°
Fog.
Fri
24° 13°
Overcast.
Sat
25° 14°
Clear.
Sun
23° 14°
Clear.
Mon
23° 13°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 15° Mostly Cloudy 26% 8 mph W 92%
8 AM 14° Fog 3% 9 mph W 88%
9 AM 16° Fog 3% 9 mph W 85%
10 AM 16° Overcast 3% 9 mph W 81%
11 AM 17° Mostly Cloudy 3% 10 mph W 78%
12 PM 18° Mostly Cloudy 3% 11 mph W 76%
1 PM 21° Mostly Cloudy 3% 12 mph W 74%
2 PM 21° Mostly Cloudy 3% 13 mph W 72%
3 PM 21° Mostly Cloudy 3% 13 mph W 71%
4 PM 21° Mostly Cloudy 3% 14 mph W 71%
5 PM 21° Mostly Cloudy 3% 13 mph W 71%
6 PM 20° Mostly Cloudy 3% 12 mph W 74%
7 PM 19° Mostly Cloudy 3% 11 mph W 77%
8 PM 19° Mostly Cloudy 3% 10 mph W 80%
9 PM 17° Mostly Cloudy 3% 10 mph WSW 83%
10 PM 17° Overcast 6% 10 mph WSW 86%
11 PM 17° Overcast 6% 9 mph WSW 87%
12 AM 16° Mostly Cloudy 6% 9 mph WSW 88%
1 AM 16° Mostly Cloudy 6% 8 mph WSW 89%
2 AM 15° Mostly Cloudy 6% 7 mph WSW 89%
3 AM 15° Mostly Cloudy 6% 7 mph WSW 89%
4 AM 15° Haze 6% 6 mph WSW 89%
5 AM 14° Fog 6% 6 mph WSW 89%
6 AM 14° Fog 6% 6 mph WSW 88%
15-Day Forecast
Today
8/25
Mostly Cloudy
26%
14°
22°
Wed
8/26
Fog
6%
14°
23°
Thu
8/27
Fog
3%
13°
24°
Fri
8/28
Overcast
3%
13°
24°
Sat
8/29
Clear
3%
14°
25°
Sun
8/30
Clear
3%
14°
23°
Mon
8/31
Clear
3%
13°
23°
Tue
9/1
Clear
3%
13°
24°
Wed
9/2
Clear
25%
14°
26°
Thu
9/3
Clear
25%
15°
26°
Fri
9/4
Clear
25%
14°
28°
Sat
9/5
Clear
25%
14°
28°
Sun
9/6
Clear
3%
14°
27°
Mon
9/7
Clear
3%
14°
27°
Tue
9/8
Clear
3%
14°
28°
27
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
27 AQI 4.9 µg/m³
O3
Ground-level ozone
21 AQI 24 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 27 Good 21 27
Thu 32 Good 19 32
Fri 22 Good 17 22
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 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Tue Aug 25, 13:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1 J/kg
MLCAPE58 J/kg
MUCAPE0 J/kg
SBCIN-0 J/kg
MLCIN0 J/kg
Lifted Index11.4
Kinematics
0–6 km Shear24 kt
0–1 km Shear4 kt
Eff. Shear—
0–1 km SRH27
0–3 km SRH131
Eff. SRH—
Storm Motion256° @ 27 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index12.7
Thermo & Levels
PWAT0.95 in
0–3 km LR1.5 °C/km
700–500 LR6.6 °C/km
Total Totals38.5
LCL996 hPa
LFC1014 hPa
EL993 hPa
Freezing Lvl15,262 ft