5-day weather forecast St. Louis Oct 19, 2026

22°11° · Sunny

Weather forecast St. Louis tomorrow Oct 19, 2026: sunny, temperature from 11 °C to 22 °C.

Precipitation probability 10%. Wind up to 2.5 m/s (gusts 5 m/s). Air humidity 22–48%, atmospheric pressure 769–772 mm Hg, UV index up to 4.6.

Sunrise 07:14
Sunset 18:17
First Quarter68% illuminated
Moonrise 15:15 · Moonset 00:39
Chart
Table

Forecast from 11 °C to 22 °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)131313121212111112141618192122222222201818171616
Precipitation (mm/hr)000000000000000000000000

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 (%)000005195000011526551004298929710099
Rain chance (%)11112232211100124939991010

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)2.192.192.111.891.811.51.51.611.51.8122.112.192.1921.891.691.190.891.192.1122.192.5
Wind gust (m/s)4.814.724.1943.4232.52.642.392.812.922.832.832.832.612.422.221.610.891.222.52.893.925
Wind direction (°)SSE 166°SSE 168°S 172°S 175°S 174°SSE 168°SSE 163°SSE 162°SSE 157°SSE 167°S 169°SSE 167°S 169°S 173°S 178°S 173°S 171°S 169°ESE 122°E 82°ENE 76°E 82°ESE 108°ESE 119°

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 (%)424345464748484848413530272423222326293133363841

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)771771771771771771771772772772772772771770770769769769769769769770770770

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 Index0000000000.61.62.94.14.64.131.70.6000000

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)7.88.49.19.810.711.81314.61715.312.18.76.86.46.66.86.979.715.418.51918.618.1
PM10 (µg/m³)8.18.79.410.211.112.313.615.317.915.812.59.17.26.877.27.47.510.115.818.919.418.918.5
Ozone (O₃) (µg/m³)393836343022131016274055708392979581604334282523
NO₂ (µg/m³)15.815.716.618.32126.633.235.931.222.615.311.28.36.44.43.35.915.228.238.543.846.447.346.4
SO₂ (µg/m³)1.71.71.81.922.12.22.42.52.73.24.45.977.47.37.16.76.25.64.94.23.63.1
CO (µg/m³)184182182184192211235251252245231206175154145146168235323374351290244235

St. Louis 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.