5-day weather forecast San Diego Oct 17, 2026

29°25° · Sunny

Weather forecast San Diego tomorrow Oct 17, 2026: sunny, temperature from 25 °C to 29 °C.

Precipitation probability 17%. Wind up to 6 m/s (gusts 9 m/s). Air humidity 30–42%, atmospheric pressure 760–762 mm Hg, UV index up to 6.2.

Sunrise 06:54
Sunset 18:13
First Quarter47% illuminated
Moonrise 13:44 · Moonset 23:47
Chart
Table

Forecast from 25 °C to 29 °C and precipitation

Temperature & Precipitation
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Temperature (°C)282727272625252525262728282928272727272726262525
Precipitation (mm/hr)00.050.010.020.0300.100000000000000000

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Cloud cover (%)100100100100731009910086185543857710099355431000
Rain chance (%)91210107101710811137610103411111

Wind speed and direction

Wind & Wind gust
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Wind (m/s)4.193.394.1963.81332.192.393.393.192.611.191.1145.695.195.194.813.69121.190.69
Wind gust (m/s)6.423.725.2295.145.113.722.423.114.6954.532.921.1188.695.425.726.394.52.644.311.921.22
Wind direction (°)ENE 63°ENE 67°NE 39°NE 37°ENE 66°ESE 105°E 82°E 86°NE 51°ENE 62°E 96°E 95°ESE 107°W 280°W 269°W 268°W 269°WNW 296°NW 311°NNW 334°NNW 328°SE 138°SE 137°ESE 103°

Air humidity

Humidity
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Humidity (%)303332323338373835323131323134364041383636414242

Atmospheric pressure

Pressure
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Pressure (mm Hg)761761761761761761761761761762761761761761760760760760760760761761761761

Ultraviolet index

UV Index
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
UV Index000000000.212.64.55.86.25.23.61.90.6000000

Air quality & pollen

Air quality
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
PM2.5 (µg/m³)1716.516.215.413.711.49.79.59.49.7109.89.39.18.98.88.89.410.310.510.19.69.18.8
PM10 (µg/m³)73.170.568.560.349.236.728.926.124.625.427.627.429.93029.629.329.426.826.42626.325.724.422.8
Ozone (O₃) (µg/m³)767371706968686869737883889496948982736254515047
NO₂ (µg/m³)5.35.45.45.24.84.85.56.56.96.35.143.12.32.446.59.312.716.418.919.218.217.7
SO₂ (µg/m³)0.40.40.40.40.40.40.50.60.70.70.70.70.70.70.70.70.80.80.80.90.90.90.80.8
CO (µg/m³)182207216192153128133152166167163156146134126126130135139144152167185196

San Diego on the map

Data Sources & Methodology

Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.