🇺🇸 Weather in San Diego
Map Overlays:
Hourly Forecast for San Diego
03:00
20°
33%
04:00
20°
33%
05:00
20°
33%
06:00
20°
33%
07:00
20°
33%
08:00
20°
32%
09:00
21°
31%
10:00
22°
30%
11:00
22°
32%
12:00
23°
27%
13:00
25°
18%
14:00
26°
9%
15:00
26°
3%
16:00
25°
4%
17:00
25°
4%
18:00
24°
4%
19:00
24°
4%
20:00
23°
5%
21:00
23°
5%
22:00
23°
5%
23:00
22°
6%
00:00
22°
6%
01:00
22°
7%
02:00
22°
7%
14-Day Forecast for San Diego
2026-07-28
Sunny
26° /
20°
2026-07-29
Sunny
26° /
21°
2026-07-30
Sunny
27° /
22°
2026-07-31
Sunny
28° /
22°
2026-08-01
Sunny
28° /
24°
2026-08-02
Sunny
26° /
23°
2026-08-03
Sunny
27° /
23°
Additional Forecasts for San Diego
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 172.0 μg/m³
O₃ (Ozone) 13.0 μg/m³
NO₂ (Nitrogen Dioxide) 38.7 μg/m³
SO₂ (Sulphur Dioxide) 1.3 μg/m³
PM2.5 (Fine particles) 13.6 μg/m³
PM10 (Coarse particles) 17.0 μg/m³
Historical Weather
Weather Forecasts for Other Cities in United States
Weather in San Diego — FAQ
Answers refreshed each request based on current conditions in San Diego.
What is the weather like right now in San Diego?
Right now in San Diego, United States the temperature is 20.9°C (feels like 20.9°C), with overcast. Relative humidity is 83% and wind is 5.8 km/h.
What is today's high and low temperature in San Diego?
Today's forecast high in San Diego is 26.5°C and the overnight low is 19.9°C. The diurnal range — high minus low — depends on cloud cover; clear days swing more than overcast ones.
Will it rain in San Diego today?
The chance of precipitation in San Diego today is 16%. Forecast accuracy is highest within the next 6 hours and decreases steadily out to 14 days.
How often does the weather here update?
Current observations refresh every 15-60 minutes from the nearest monitoring stations operated by national meteorological agencies. The hourly forecast updates approximately every hour; the 7- and 14-day outlook is recomputed several times per day.
What does 'feels like' temperature mean?
Feels-like (apparent) temperature accounts for humidity, wind chill and direct sunshine — variables that change how the human body perceives heat or cold. On hot, humid days it can be 3-7°C above the actual reading; on cold windy days it can be 5-15°C below.
Why does the temperature in San Diego differ from nearby cities?
Even short distances can change temperatures noticeably. San Diego's reading reflects altitude, proximity to large bodies of water, urban heat island effects, and the exact location of the monitoring stations supplying the data. Coastal cities are typically milder and more humid than inland equivalents.