Today
Sun, Jun 21
Heavy rain
30°19°
- Rain chance
- 100%
- Precip
- 37.5 mm
- Max wind
- 15 km/h
Westerlo air quality
Flanders, Belgium · Brussels time · 51.09°, 4.92°
Current conditions · 2:30 PM local
Current conditions in Westerlo
29°C
Clear sky
Feels like 24°C
- Humidity
- 72%
- Wind
- 7 km/h NNE
- Gusts
- 21 km/h
- UV index
- 0
- Visibility
- 50 km
Air quality
35
Good
US AQI · European AQI 53
Air quality in Westerlo is currently good, with a US AQI of 35 (European AQI 53). The dominant pollutant right now is ozone. Air quality is healthy; no precautions needed. Fine particulate matter (PM2.5) measures 8.3 µg/m³. Pollen in the air today: grass (moderate) — allergy sufferers take note.
Pollutants
- PM2.5
- 8.3 µg/m³
- PM10
- 10.3 µg/m³
- Ozone (O₃)
- 119 µg/m³
- NO₂
- 1.6 µg/m³
- SO₂
- 0.5 µg/m³
- CO
- 137 µg/m³
- Dust
- 3 µg/m³
Pollen
- Grass
- 42.8 gr/m³
- Birch
- 0 gr/m³
- Alder
- 0 gr/m³
- Olive
- 0.1 gr/m³
- Mugwort
- 0.7 gr/m³
- Ragweed
- 0 gr/m³
AQI computed from the CAMS air quality model via Open-Meteo. Bands follow the US EPA scale.
Right now
Westerlo is currently seeing clear sky, with 29 °C on the thermometer. It feels warmer than it reads, more like 34 °C. Wind is from the NNE at 7 km/h. Humidity stands at 58% with sea-level pressure near 1024 hPa.
At a glance
Today
30° / 19°Heavy rain · rain likely (100%)
Tomorrow
31° / 20°Overcast
Upcoming · to Saturday
37° / 21°A steady stretch: highs near 37°, lows around 21°, and no day above a 25% rain chance through Saturday.
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Next 3 days
Today looks like heavy rain; temperatures run from 19 °C up to 30 °C. Rain chance peaks at 100% with around 37.5 mm possible. Tomorrow brings overcast with a high of 31 °C and a low of 20 °C. Tuesday brings partly cloudy with a high of 34 °C and a low of 21 °C.
Tomorrow
Mon, Jun 22
Overcast
31°20°
- Rain chance
- 2%
- Precip
- 0 mm
- Max wind
- 11 km/h
Tuesday
Tue, Jun 23
Partly cloudy
34°21°
- Rain chance
- 2%
- Precip
- 0 mm
- Max wind
- 9 km/h
Next 48 hours
- 12 AM23°12%12 km/h
- 1 AM21°0%4 km/h
- 2 AM20°2%3 km/h
- 3 AM20°33%7 km/h
- 4 AM19°77%15 km/h
- 5 AM20°100%9 km/h
- 6 AM20°80%4 km/h
- 7 AM20°38%9 km/h
- 8 AM21°6%3 km/h
- 9 AM22°0%1 km/h
- 10 AM23°0%8 km/h
- 11 AM26°2%6 km/h
- 12 PM26°1%5 km/h
- 1 PM28°0%5 km/h
- 2 PM29°0%8 km/h
- 3 PM30°0%7 km/h
- 4 PM30°1%7 km/h
- 5 PM30°2%8 km/h
- 6 PM30°3%8 km/h
- 7 PM29°4%9 km/h
- 8 PM28°4%9 km/h
- 9 PM27°3%9 km/h
- 10 PM26°1%8 km/h
- 11 PM25°0%8 km/h
- 12 AM24°0%8 km/h
- 1 AM23°0%7 km/h
- 2 AM23°0%8 km/h
- 3 AM22°0%7 km/h
- 4 AM21°0%7 km/h
- 5 AM21°0%9 km/h
- 6 AM20°0%8 km/h
- 7 AM21°0%9 km/h
- 8 AM22°0%9 km/h
- 9 AM23°0%8 km/h
- 10 AM24°0%7 km/h
- 11 AM26°0%8 km/h
- 12 PM27°0%10 km/h
- 1 PM29°0%9 km/h
- 2 PM30°0%8 km/h
- 3 PM30°0%8 km/h
- 4 PM31°0%8 km/h
- 5 PM31°0%8 km/h
- 6 PM30°1%9 km/h
- 7 PM30°2%10 km/h
- 8 PM28°2%11 km/h
- 9 PM27°2%10 km/h
- 10 PM26°1%10 km/h
- 11 PM25°0%9 km/h
In depth
The weather picture for Westerlo opens with clear sky; it's 29 °C out, feeling like 34 °C. Today's forecast calls for heavy rain, topping out near 30 °C before falling back to 19 °C overnight. Winds blow mainly from the NE around 15 km/h, with gusts up to 30 km/h. A warming trend takes daytime highs from 30 to 37 °C over the coming week. Rain is in the picture on today, with roughly 38 mm expected in total across the week. Tomorrow brings overcast with a high of 31 °C and a 2% chance of precipitation. The UV index reaches 7 today, so sun protection is sensible during the middle of the day. Sunrise comes at 05:25 and sunset at 21:58, giving 16.6 hours of daylight. Current humidity sits at 58% with pressure near 1024 hPa. Looking further out, Thursday shows overcast with a high around 37 °C, while Saturday ends the week at 34 °C. Forecast details are refreshed throughout the day as new model runs arrive, so check back for the latest figures.
Sun & UV
- Sunrise
- 5:25 AM
- Sunset
- 9:58 PM
- Daylight
- 16h 34m
- Max UV
- 7 High
Wind
- Wind
- 7 km/h
- Gusts
- 21 km/h
- Direction
- NNE (28°)
Farming weather
Soil temperatures today read surface 23.1 °C, 6 cm 24.4 °C, 18 cm 25 °C, 54 cm 20.7 °C. Soil moisture sits at 0-1 cm at 0.15 m³/m³, 3-9 cm at 0.16 m³/m³, 27-81 cm at 0.15 m³/m³. For wheat, the root-zone reading is below the ideal 0.2-0.35 m³/m³ band. ET0 of 46 mm modestly outpaces the 38 mm of forecast rain; light supplemental irrigation may help. A suitable spraying window opens around 06:00 on 2026-06-21, with winds at or below 15 km/h and no rain expected. Heat stress is likely for wheat with highs reaching 37 °C (threshold 32 °C). Heat stress is likely for maize with highs reaching 37 °C (threshold 35 °C). Projected growing degree days over the next week: wheat 164, maize 126.
- Topsoil moisture
- 0.103 m³/m³
- Soil temp
- 21°C
- ET₀ today
- 5.56 mm
- Spray window
- ~5:00
- Rain (next 7d)
- 38.4 mm
- Wind
- 7 km/h
- Humidity
- 72%
Advisory summary
No weather alert thresholds are crossed for Westerlo in the current forecast (derived from forecast data, not official warnings). Conditions may still change — check back for updates.
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All data for Westerlo
| Variable | Value |
|---|---|
| City | Westerlo, Flanders, Belgium |
| Coordinates | 51.09049, 4.91544 |
| Elevation | 14 m |
| Timezone | Europe/Brussels |
| Population | 22,579 |
| Observed at (local) | 2:30 PM |
| Temperature (2 m) | 29°C |
| Apparent temperature | 24°C |
| Relative humidity (2 m) | 72% |
| Dew point (2 m) | 18°C |
| Precipitation (last hour) | 0 mm |
| Rain | 0 mm |
| Showers | 0 mm |
| Snowfall | 0 cm |
| Weather code (WMO) | 0 |
| Cloud cover | 0% |
| Surface pressure | 1023 hPa |
| Sea-level pressure | 1024 hPa |
| Wind speed (10 m) | 7 km/h |
| Wind gusts (10 m) | 21 km/h |
| Wind direction (10 m) | 28° (NNE) |
| Visibility | 50 km |
| UV index | 0 |
| Day / night | Day |
| Today max / min | 30°C / 19°C |
| Today feels-like max / min | 35°C / 20°C |
| Today precipitation sum | 37.5 mm |
| Today rain sum | 37.5 mm |
| Today snowfall sum | 0 cm |
| Today max precip probability | 100% |
| Today max wind / gusts | 15 km/h / 30 km/h |
| Dominant wind direction | 48° (NE) |
| Sunrise / sunset | 5:25 AM / 9:58 PM |
| Daylight duration | 16h 34m |
| Sunshine duration | 14h 46m |
| Max UV index | 7 |
| Reference evapotranspiration (ET₀) | 5.56 mm |
| Topsoil moisture (0–1 cm) | 0.103 m³/m³ |
| Surface soil temperature | 21°C |
| US AQI | 35 |
| European AQI | 53 |
| PM2.5 | 8.3 µg/m³ |
| PM10 | 10.3 µg/m³ |
| Ozone (O₃) | 119 µg/m³ |
| Nitrogen dioxide (NO₂) | 1.6 µg/m³ |
| Sulphur dioxide (SO₂) | 0.5 µg/m³ |
| Carbon monoxide (CO) | 137 µg/m³ |
| Dust | 3 µg/m³ |
| Alder pollen | 0 gr/m³ |
| Birch pollen | 0 gr/m³ |
| Grass pollen | 42.8 gr/m³ |
| Mugwort pollen | 0.7 gr/m³ |
| Olive pollen | 0.1 gr/m³ |
| Ragweed pollen | 0 gr/m³ |
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<iframe src="https://weathertomorrow.cloud/embed/city/be/flanders/westerlo" width="320" height="180" frameborder="0" title="Westerlo weather" loading="lazy"></iframe>Frequently asked questions
Will it rain in Westerlo tomorrow?
Rain is unlikely in Westerlo tomorrow; the precipitation chance stays around 2%.
What is the temperature in Westerlo today?
Today Westerlo sees heavy rain with a high of 30 °C and a low of 19 °C.
How hot will it be in Westerlo tomorrow?
Tomorrow's high in Westerlo is forecast at 31 °C with overcast.
Is it windy in Westerlo today?
No, not especially; gusts only reach up to 30 km/h today.
What is the UV index in Westerlo today?
The UV index peaks at 7 today, which is high.
What time is sunrise and sunset in Westerlo today?
The sun rises at 05:25 and sets at 21:58 local time.
Is the air quality in Westerlo good today?
Air quality is good right now, with a US AQI reading of 35.