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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81°
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68°
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76°
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84°
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89°
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90°
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85°
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80°
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°F
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87°
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73°
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83°
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92°
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99°
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96°
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90°
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85°
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SE |
N |
ESE |
NW |
E |
SSE |
N |
WSW |
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mph
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2-12
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3-15
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2-19
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1-9
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1-8
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2-11
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2-11
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2-7
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in
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-
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0.10
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0.24
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< 0.04
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-
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-
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-
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-
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%
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45%
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80%
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75%
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25%
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5%
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5%
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5%
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25%
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in
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12.4 mi
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During the night and in the first hours of the day there is a chance of thunderstorms and local showers. After noon the weather will clear up until only a few clouds remain. It is a sunny day. Temperatures peaking at 90 °F. With a UV-Index as high as 7 make sure to properly protect your skin. The whole day light air is noticeable (1 to 4 mph). Gusts to 19 mph are possible. Winds blowing overnight from North, in the morning from West and during the afternoon from East. The weather forecast for Monza for Friday can be accurate in parts but deviations are expected. Check again for latest updates.
Pressure: 1012 hPa
Timezone: CEST (UTC +02:00h)
The location marker is placed on Monza. 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.
You can embed this meteogram into your own website. Customize it here.
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.
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 
Monza 
