5-day weather forecast Brussels Sep 27, 2026

26°13° · Overcast

Weather forecast Brussels Sunday Sep 27, 2026: overcast, temperature from 13 °C to 26 °C.

Precipitation probability 27%. Wind up to 3.19 m/s (gusts 7.61 m/s). Air humidity 34–86%, atmospheric pressure 761–767 mm Hg, UV index up to 3.3.

Sunrise 07:36
Sunset 19:30
Waning Gibbous96% illuminated
Moonrise 19:23 · Moonset 08:33
Chart
Table

Forecast from 13 °C to 26 °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)151514141414131313151719212324252626252322232223
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 (%)7260988276859873315444310098981001001001001009996100100
Rain chance (%)18182723212324181166511101010101010101091010

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)2.52.612.111.811.51.191.311.191.391.51.8122.192.312.612.52.8931.812.112.612.813.193.19
Wind gust (m/s)3.723.722.4221.51.335.311.254.392.032.222.613.113.334.2255.755.222.142.112.724.535.817.61
Wind direction (°)NE 44°NE 47°NE 50°NE 51°NE 56°ENE 77°E 101°SE 128°SSE 151°SSE 159°S 174°S 176°S 188°SSW 207°SW 215°SSW 204°SSW 205°SSW 206°SSW 196°S 175°SSE 163°S 173°S 179°SSW 193°

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 (%)818486858584828077685751464240363435414445414242

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)767766766765765765764764764764764764763763763762761761761761761761761761

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 Index0000000000.20.71.62.43.13.32.61.310.400000

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)13.117.422.225.225.425.825.925.926.125.224.524.828.822.415.510.28.27.27.67.69.310.310.510.9
PM10 (µg/m³)20.322.225.229.831.631.631.43233.934.833.73334.624.81813.512.510.411.112.113.515.716.916.8
Ozone (O₃) (µg/m³)272020262926252321233233465974859293887063485346
NO₂ (µg/m³)36.63839.433.327.521.318.518.122.721.114.514.111.89.46.75.45.34.57.211.215.423.222.220.1
SO₂ (µg/m³)3.84.132.11.61.21.111.11.11.31.91.91.51.30.90.50.50.60.80.91.11.30.8
CO (µg/m³)214220216219221216213227252249240240225202178167161162171191186184186185

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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.