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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 Sep 14 8:00
Sapporo
20.3
Aomori
22.2
Akita
21.9
Morioka
20.0
Sendai
22.8
Yamagata
21.8
Fukushima
23.6
Mito
25.4
Utsunomiya
24.2
Maebashi
23.8
Kumagaya
23.7
Tokyo
27.8
Choshi
28.2
Yokohama
27.7
Nagano
25.5
Kofu
26.4
Shizuoka
27.5
Nagoya
27.9
Gifu
26.6
Tsu
26.2
Niigata
23.8
Toyama
26.2
Kanazawa
24.5
Fukui
28.3
Hikone
26.9
Kyoto
26.9
Osaka
25.4
Kobe
26.7
Nara
24.3
Wakayama
27.0
Okayama
28.5
Hiroshima
24.5
Matsue
21.9
Tottori
25.0
Shimonoseki
24.5
Tokushima
26.6
Takamatsu
28.0
Matsuyama
24.3
Kochi
25.3
Fukuoka
22.4
Oita
24.5
Nagasaki
23.6
Saga
25.4
Kumamoto
26.1
Miyazaki
27.8
Kagoshima
29.1
Naha
27.0
Daily Maximum WBGT and Forecast
| 09/14 | 09/15 | 09/16 | 09/14 09 | 09/14 12 | 09/14 15 | 09/14 18 | 09/14 21 | 09/14 24 | 09/15 03 | 09/15 06 | 09/15 09 | 09/15 12 | 09/15 15 | 09/15 18 | 09/15 21 | 09/15 24 | 09/16 03 | 09/16 06 | 09/16 09 | 09/16 12 | 09/16 15 | 09/16 18 | 09/16 21 | 09/16 24 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ogochi | 28 | 23 | 23 | 25 | 28 | 27 | 22 | 20 | 18 | 19 | 19 | 23 | 23 | 22 | 21 | 21 | 21 | 20 | 19 | 20 | 23 | 22 | 20 | 19 | 18 |
| Ome | 30 | 25 | 25 | 27 | 30 | 29 | 25 | 24 | 21 | 21 | 21 | 24 | 25 | 25 | 23 | 23 | 22 | 22 | 21 | 23 | 25 | 23 | 21 | 20 | 19 |
| Nerima | 31 | 27 | 24 | 28 | 31 | 30 | 26 | 24 | 23 | 22 | 22 | 25 | 26 | 27 | 24 | 23 | 22 | 22 | 21 | 23 | 24 | 22 | 21 | 21 | 20 |
| Hachioji | 30 | 26 | 25 | 27 | 30 | 29 | 25 | 24 | 22 | 21 | 21 | 23 | 25 | 26 | 24 | 24 | 23 | 22 | 21 | 23 | 25 | 24 | 21 | 20 | 19 |
| Fuchu | 31 | 27 | 24 | 28 | 31 | 29 | 25 | 24 | 23 | 21 | 21 | 24 | 26 | 27 | 24 | 24 | 23 | 23 | 22 | 23 | 24 | 24 | 22 | 21 | 20 |
| Tokyo | 31 | 26 | 25 | 29 | 31 | 29 | 25 | 24 | 23 | 22 | 22 | 25 | 26 | 26 | 24 | 23 | 23 | 22 | 23 | 24 | 25 | 21 | 20 | 20 | 20 |
| Edogawa-rinkai | 30 | 25 | 25 | 28 | 30 | 27 | 23 | 23 | 22 | 22 | 22 | 24 | 25 | 25 | 23 | 23 | 23 | 23 | 23 | 25 | 24 | 22 | 21 | 21 | 21 |
| Oshima | 29 | 26 | 27 | 27 | 29 | 27 | 24 | 24 | 23 | 23 | 23 | 25 | 26 | 24 | 23 | 23 | 22 | 21 | 22 | 24 | 27 | 24 | 22 | 21 | 21 |
| Miyakejima | 29 | 27 | 27 | 29 | 29 | 27 | 24 | 23 | 23 | 23 | 24 | 25 | 27 | 25 | 24 | 23 | 22 | 22 | 22 | 25 | 27 | 25 | 23 | 22 | 21 |
| Hachijojima | 31 | 29 | 29 | 29 | 31 | 28 | 24 | 24 | 25 | 24 | 24 | 26 | 29 | 27 | 24 | 24 | 23 | 22 | 22 | 26 | 29 | 27 | 24 | 24 | 23 |
| Chichijima | 31 | 31 | 31 | 30 | 31 | 29 | 26 | 26 | 25 | 25 | 25 | 29 | 31 | 30 | 27 | 26 | 26 | 25 | 26 | 30 | 31 | 29 | 27 | 27 | 27 |
| Minami-torishima |
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.
