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Heat Stress Index: WBGT
Current WBGT and Forecast
Select the location
| (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 Jun 6 8:00
Sapporo
11.6
Aomori
12.3
Akita
12.5
Morioka
11.7
Sendai
13.1
Yamagata
14.0
Fukushima
14.3
Mito
15.9
Utsunomiya
15.3
Maebashi
16.0
Kumagaya
16.2
Tokyo
17.7
Choshi
15.4
Yokohama
16.1
Nagano
18.5
Kofu
17.9
Shizuoka
18.8
Nagoya
19.4
Gifu
17.8
Tsu
20.4
Niigata
17.3
Toyama
20.4
Kanazawa
19.8
Fukui
19.1
Hikone
18.3
Kyoto
20.7
Osaka
20.1
Kobe
20.5
Nara
22.1
Wakayama
22.1
Okayama
20.1
Hiroshima
21.0
Matsue
23.3
Tottori
22.5
Shimonoseki
20.5
Tokushima
20.7
Takamatsu
21.0
Matsuyama
24.8
Kochi
20.6
Fukuoka
23.1
Oita
22.4
Nagasaki
20.3
Saga
22.2
Kumamoto
24.0
Miyazaki
23.2
Kagoshima
24.3
Naha
26.3
Daily Maximum WBGT and Forecast
| 06/06 | 06/07 | 06/08 | 06/06 09 | 06/06 12 | 06/06 15 | 06/06 18 | 06/06 21 | 06/06 24 | 06/07 03 | 06/07 06 | 06/07 09 | 06/07 12 | 06/07 15 | 06/07 18 | 06/07 21 | 06/07 24 | 06/08 03 | 06/08 06 | 06/08 09 | 06/08 12 | 06/08 15 | 06/08 18 | 06/08 21 | 06/08 24 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sapporo | 15 | 15 | 17 | 12 | 15 | 13 | 12 | 12 | 11 | 11 | 13 | 14 | 14 | 14 | 15 | 13 | 13 | 14 | 14 | 15 | 16 | 17 | 15 | 13 | 14 |
| Kushiro | 13 | 14 | 14 | 9 | 13 | 11 | 10 | 9 | 9 | 9 | 11 | 12 | 14 | 12 | 11 | 11 | 10 | 9 | 10 | 11 | 12 | 14 | 10 | 10 | 10 |
| Aomori | 18 | 21 | 23 | 13 | 15 | 18 | 15 | 14 | 13 | 13 | 14 | 17 | 19 | 21 | 17 | 16 | 15 | 15 | 16 | 19 | 18 | 23 | 18 | 18 | 16 |
| Sendai | 18 | 22 | 20 | 14 | 16 | 18 | 17 | 16 | 16 | 16 | 18 | 20 | 22 | 19 | 18 | 17 | 17 | 18 | 18 | 19 | 19 | 18 | 19 | 20 | 20 |
| Tokyo | 22 | 24 | 26 | 18 | 20 | 22 | 19 | 18 | 18 | 17 | 19 | 23 | 24 | 23 | 21 | 20 | 19 | 19 | 20 | 20 | 23 | 26 | 22 | 22 | 21 |
| Nagano | 23 | 24 | 26 | 20 | 21 | 23 | 19 | 18 | 18 | 16 | 17 | 22 | 24 | 22 | 20 | 19 | 20 | 19 | 20 | 23 | 23 | 26 | 22 | 21 | 20 |
| Nagoya | 25 | 25 | 25 | 20 | 23 | 25 | 22 | 20 | 20 | 20 | 19 | 22 | 25 | 22 | 20 | 19 | 19 | 20 | 21 | 22 | 24 | 25 | 23 | 19 | 20 |
| Niigata | 25 | 26 | 24 | 19 | 25 | 25 | 21 | 20 | 18 | 17 | 20 | 24 | 26 | 22 | 19 | 19 | 19 | 19 | 19 | 20 | 24 | 23 | 20 | 19 | 18 |
| Kanazawa | 26 | 27 | 25 | 20 | 26 | 25 | 22 | 21 | 20 | 20 | 20 | 27 | 26 | 22 | 21 | 20 | 20 | 20 | 20 | 22 | 25 | 25 | 22 | 20 | 20 |
| Osaka | 26 | 25 | 25 | 22 | 26 | 25 | 23 | 23 | 22 | 21 | 21 | 25 | 23 | 22 | 22 | 19 | 20 | 20 | 22 | 23 | 24 | 25 | 22 | 22 | 21 |
| Hiroshima | 26 | 23 | 25 | 22 | 25 | 26 | 24 | 22 | 21 | 21 | 21 | 21 | 22 | 22 | 23 | 21 | 21 | 21 | 21 | 21 | 24 | 24 | 25 | 24 | 23 |
| Matsue | 26 | 24 | 26 | 24 | 26 | 25 | 22 | 21 | 21 | 20 | 21 | 23 | 24 | 21 | 20 | 21 | 20 | 20 | 21 | 24 | 26 | 24 | 22 | 20 | 20 |
| Kochi | 24 | 24 | 28 | 22 | 23 | 24 | 22 | 22 | 21 | 20 | 20 | 22 | 22 | 24 | 23 | 23 | 22 | 21 | 21 | 25 | 26 | 28 | 26 | 23 | 21 |
| Fukuoka | 30 | 27 | 27 | 26 | 28 | 30 | 25 | 24 | 23 | 22 | 22 | 25 | 27 | 25 | 26 | 23 | 23 | 23 | 23 | 25 | 26 | 27 | 24 | 21 | 19 |
| Kagoshima | 26 | 29 | 27 | 26 | 26 | 26 | 23 | 21 | 21 | 23 | 23 | 23 | 29 | 27 | 26 | 25 | 24 | 23 | 23 | 25 | 26 | 27 | 24 | 21 | 20 |
| Naze | 27 | 30 | 29 | 24 | 27 | 26 | 25 | 25 | 24 | 25 | 25 | 27 | 29 | 30 | 26 | 25 | 25 | 25 | 25 | 28 | 29 | 28 | 27 | 25 | 25 |
| Naha | 29 | 28 | 30 | 27 | 29 | 29 | 26 | 25 | 25 | 25 | 25 | 26 | 27 | 28 | 26 | 25 | 25 | 25 | 26 | 27 | 29 | 30 | 27 | 26 | 26 |
| Ishigakijima | 30 | 31 | 30 | 25 | 28 | 30 | 28 | 27 | 27 | 27 | 27 | 28 | 30 | 31 | 29 | 27 | 27 | 27 | 27 | 29 | 30 | 30 | 29 | 27 | 27 |
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.
