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A monthly synthesis of extreme-heat forecasts and heat-risk signals.
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Research web product by
RCEC x ACCC Climate Lab
Academia Sinica heatwave-event detection and climate-trend observatory
DFS heatwave observatory
Heatwave Tracker
Explore DFS-detected heatwave events, historical rankings, regional scale metrics, and climate-trend signals in one place.
Historical today
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Scanning detected events active on this calendar day.
Region
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HWMS
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Duration
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Context match
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Connecting this DFS event to external reports by region and time window.
Matched by event region and detected time window.
Temperature
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Reported impact
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Damage or health impact will appear here.
Regional real-world matches
Five source-matched cases active on this calendar day
Historical today
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Open calendar viewHighest severity
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See full rankingBriefing lead
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Read today's briefingChart focus
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Compare regional trends by frequency, duration, severity, magnitude, and radar summaries.
Open chart studioFeatured historical events
Extreme cases worth revisiting
2003 Europe
A landmark event for mortality, public health risk, and heatwave preparedness.
2010 Russia
Persistent high heat with broad impacts across ecosystems, crops, and society.
2021 W. North America
An exceptional event that reset regional heat records and risk expectations.
2022 South China
Long duration and large spatial extent make it a useful comparison case.