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Special Heat Stroke Alert ・ Heat Stroke Alert

Updated at May 27(Mon)17:00
Today[May 27]
Map of Japan Alert Map(Today) Special Heat Stroke AlertsNot issued Heat Stroke AlertsNot issued WBGT forecast: 31+Issued

Heat Stress Index: WBGT

(Blue) Almost safe (Sky) Caution (Yellow) Warning (Orange) Severe Warning (Red) Danger
< 21
appropriate water replenishment suggested
21 - 25
water should be replenished often
25 - 28
rests should be provided often
28 - 31
heavy exercise prohibited
≥ 31
exercise prohibited
WBGT monitoring as of May 27 18:00
Sapporo
16.1
Sendai
21.0
Tokyo
22.4
Niigata
20.4
Nagoya
22.0
Osaka
24.2
Hiroshima
22.3
Kochi
23.0
Fukuoka
21.0
Kagoshima
23.3
Naha
26.5
Note

WBGT index is one of the empirical indices representing the heat stress to which an individual is exposed. (ISO7243)
WBGT varies depending on environmental situation and condition.

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