Live · Heat · Germany & worldwide
The heat radar shows warm and hot air masses worldwide as an interactive heatmap. Red and orange areas mark heat belts, heat waves and temperatures above 30 °C – ideal for tracking development over the last few hours with the timelapse.
The heat radar uses the same temperature heatmap as our temperature radar, but focuses on warm and hot areas. Heat waves form when high-pressure systems let warm air stagnate for several days – especially in cities and inland regions.
Watch for connected red areas and whether heat barely eases at night: If values stay above 20 °C, you have a tropical night – a typical sign of persistent heat waves.
Dark red and orange areas mark the warmest regions. Zoom to Germany or Europe to place local heat waves in context.
Play back the last hour: Is heat building steadily, or is a cold front easing the situation?
High humidity during heat increases strain. Also check the dew point and humidity maps.
In Central Europe, heat waves usually occur in high summer when subtropical air flows in from the south or southeast. The heat radar shows whether warm air is spreading over Germany or whether cooler maritime air from the north brings relief.
Cities heat up more than rural areas – the map shows modeled air temperature at 2 m height, not asphalt temperature. Humidity and wind are decisive for how it feels.
From persistently high temperatures above 30 °C, the risk of heat-related harm rises – especially for children, older people and during physical work. Combine the heat radar with official weather alerts: Heat warning levels are often issued there before it becomes obvious on the map.
Thunderstorms can abruptly change the situation after several hot days. If the heat radar still shows warm air but storm cells appear on the horizon, check the thunderstorm radar.
Fluids: Drink regularly – even without feeling thirsty. Plan breaks in the shade for outdoor physical work.
Midday sun: Reduce time outdoors between 11 a.m. and 3 p.m. when the map shows persistently high values.
Alerts: During official heat warnings (orange/red), keep a close eye on especially vulnerable people.
Cooling: Darken rooms during the day, use night ventilation. Cooler coastal or upland areas can bring short-term relief.
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