As Europe recovers from an exceptional heatwave and meteorologists continue to monitor the potential for more heat, the PET map helps cities identify heat stress before it becomes a public health emergency.
Heatwaves are among Europe's most significant weather hazards, affecting millions of people as well as infrastructure, agriculture, and energy systems. But what actually causes a heatwave? Why do some persist for days or even weeks? And how do meteorologists forecast them?
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Icon
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°F
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71°
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71°
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75°
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80°
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81°
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81°
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76°
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74°
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°F
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72°
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71°
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77°
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85°
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85°
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81°
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76°
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73°
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NE |
ENE |
NNE |
SW |
WSW |
W |
NE |
ENE |
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mph
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3-8
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3-6
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2-6
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1-8
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3-14
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3-14
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2-10
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3-11
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in
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-
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-
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%
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0%
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0%
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0%
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0%
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5%
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5%
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25%
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10%
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in
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12.4 mi
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The whole day a few clouds are expected. It is a sunny day. Temperature highs are likely to reach 82 °F. The UV-Index climbs up to 8, don't forget to use sunscreen when spending the day outside. The whole day light air is noticeable (1 to 4 mph). Gusts to 15 mph are possible. Winds blowing at night and in the morning from Northeast and during the afternoon from Southwest. The weather forecast for Brunate for Saturday is expected to be very accurate.
Pressure: 1011 hPa
Timezone: CEST (UTC +02:00h)
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The real-time satellite image combines visible light during daytime with infrared radiation during nighttime. At night, the image is not dark as infrared radiation can detect temperature differences. Unfortunately, low clouds and fog are difficult to distinguish from ground temperatures and thus can be almost invisible during the night. Meteosat satellite images for Europe are updated in real-time every 5 minutes. GOES-16/GOES-17 (North & South America) and Himawari (Asia) images update every 10 minutes.
Precipitation is estimated from radar and satellites. Precipitation estimates from satellites are less accurate at night than during daytime.
© 2026 meteoblue, NOAA Satellites GOES-16 and EUMETSAT. Lightning data provided by nowcast.
The location marker is placed on Brunate. This animation shows the precipitation radar for the selected time range, as well as a 2h forecast. Orange crosses indicate lightning. Data provided by nowcast.de (available in USA, Europe, Australia). Drizzle or light snow fall might be invisible for the radar. Precipitation intensity is colour coded, ranging from turquoise to red.
As Europe recovers from an exceptional heatwave and meteorologists continue to monitor the potential for more heat, the PET map helps cities identify heat stress before it becomes a public health emergency.
Heatwaves are among Europe's most significant weather hazards, affecting millions of people as well as infrastructure, agriculture, and energy systems. But what actually causes a heatwave? Why do some persist for days or even weeks? And how do meteorologists forecast them?
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Bellinzona 
Milan 
