Heat Stress Index: WBGT
Current WBGT and Forecast
| Hokkaido | Tohoku | Kanto | Koshin |
| Tokai | Hokuriku | Kinki | Chugoku |
| Shikoku | Kyushu | Okinawa |
| (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 Jul 15 6:00
Sapporo
23.0
Aomori
26.4
Akita
24.8
Morioka
23.9
Sendai
23.9
Yamagata
24.1
Fukushima
25.6
Mito
25.6
Utsunomiya
25.5
Maebashi
24.0
Kumagaya
25.0
Tokyo
26.2
Choshi
25.4
Yokohama
26.0
Nagano
23.3
Kofu
23.4
Shizuoka
24.0
Nagoya
26.4
Gifu
24.8
Tsu
25.1
Niigata
25.1
Toyama
25.0
Kanazawa
24.2
Fukui
24.3
Hikone
23.9
Kyoto
24.7
Osaka
27.0
Kobe
26.4
Nara
24.4
Wakayama
24.6
Okayama
26.2
Hiroshima
25.0
Matsue
26.0
Tottori
25.2
Shimonoseki
26.5
Tokushima
25.5
Takamatsu
26.2
Matsuyama
25.3
Kochi
24.4
Fukuoka
26.5
Oita
25.2
Nagasaki
26.0
Saga
26.8
Kumamoto
26.0
Miyazaki
25.5
Kagoshima
26.6
Naha
25.5
Daily Maximum WBGT and Forecast
| 07/15 | 07/16 | 07/17 | 07/15 09 | 07/15 12 | 07/15 15 | 07/15 18 | 07/15 21 | 07/15 24 | 07/16 03 | 07/16 06 | 07/16 09 | 07/16 12 | 07/16 15 | 07/16 18 | 07/16 21 | 07/16 24 | 07/17 03 | 07/17 06 | 07/17 09 | 07/17 12 | 07/17 15 | 07/17 18 | 07/17 21 | 07/17 24 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sapporo | 30 | 29 | 28 | 27 | 30 | 28 | 25 | 23 | 22 | 23 | 25 | 27 | 29 | 29 | 27 | 25 | 23 | 21 | 23 | 26 | 28 | 28 | 25 | 23 | 22 |
| Kushiro | 23 | 25 | 23 | 20 | 21 | 23 | 19 | 18 | 18 | 19 | 18 | 19 | 21 | 25 | 20 | 20 | 19 | 18 | 18 | 20 | 23 | 21 | 19 | 19 | 19 |
| Aomori | 31 | 30 | 28 | 30 | 31 | 29 | 27 | 26 | 25 | 25 | 24 | 28 | 29 | 30 | 26 | 24 | 22 | 21 | 21 | 22 | 26 | 28 | 25 | 22 | 21 |
| Sendai | 31 | 31 | 30 | 29 | 31 | 29 | 27 | 25 | 25 | 25 | 26 | 31 | 31 | 29 | 27 | 25 | 24 | 23 | 24 | 27 | 30 | 29 | 26 | 24 | 23 |
| Tokyo | 33 | 32 | 29 | 31 | 32 | 33 | 28 | 26 | 26 | 26 | 27 | 31 | 32 | 32 | 29 | 26 | 26 | 26 | 26 | 27 | 29 | 29 | 27 | 25 | 25 |
| Nagano | 31 | 32 | 30 | 28 | 30 | 31 | 28 | 27 | 26 | 24 | 25 | 28 | 30 | 32 | 28 | 25 | 22 | 23 | 24 | 28 | 30 | 28 | 26 | 25 | 25 |
| Nagoya | 33 | 33 | 30 | 30 | 33 | 32 | 29 | 28 | 27 | 27 | 27 | 30 | 32 | 33 | 29 | 27 | 27 | 26 | 26 | 30 | 29 | 30 | 28 | 26 | 25 |
| Niigata | 34 | 31 | 31 | 30 | 34 | 32 | 28 | 27 | 26 | 26 | 27 | 29 | 31 | 31 | 28 | 25 | 24 | 23 | 25 | 29 | 30 | 31 | 28 | 27 | 26 |
| Kanazawa | 34 | 32 | 29 | 30 | 34 | 30 | 29 | 27 | 26 | 26 | 26 | 29 | 31 | 32 | 28 | 27 | 27 | 26 | 26 | 28 | 29 | 28 | 27 | 26 | 27 |
| Osaka | 32 | 31 | 29 | 30 | 32 | 30 | 28 | 28 | 27 | 27 | 27 | 30 | 31 | 31 | 28 | 27 | 26 | 26 | 26 | 28 | 29 | 28 | 27 | 27 | 27 |
| Hiroshima | 31 | 31 | 30 | 28 | 30 | 31 | 30 | 28 | 28 | 27 | 26 | 28 | 30 | 31 | 28 | 28 | 27 | 26 | 25 | 27 | 28 | 30 | 28 | 28 | 28 |
| Matsue | 31 | 30 | 31 | 28 | 29 | 31 | 28 | 27 | 26 | 26 | 26 | 29 | 30 | 29 | 27 | 25 | 24 | 24 | 24 | 27 | 31 | 30 | 27 | 25 | 25 |
| Kochi | 32 | 32 | 30 | 30 | 32 | 31 | 29 | 28 | 27 | 25 | 24 | 29 | 32 | 31 | 29 | 29 | 27 | 24 | 24 | 30 | 29 | 28 | 28 | 27 | 26 |
| Fukuoka | 34 | 33 | 30 | 29 | 34 | 33 | 30 | 28 | 29 | 28 | 26 | 30 | 33 | 31 | 29 | 28 | 28 | 28 | 27 | 27 | 29 | 29 | 30 | 28 | 29 |
| Kagoshima | 34 | 32 | 32 | 30 | 32 | 34 | 31 | 28 | 28 | 27 | 27 | 29 | 31 | 32 | 30 | 29 | 28 | 27 | 27 | 29 | 30 | 32 | 29 | 29 | 28 |
| Naze | 33 | 33 | 30 | 29 | 33 | 31 | 30 | 27 | 27 | 26 | 27 | 30 | 33 | 32 | 29 | 27 | 27 | 26 | 26 | 29 | 29 | 30 | 28 | 26 | 26 |
| Naha | 31 | 31 | 30 | 29 | 31 | 31 | 28 | 26 | 26 | 26 | 26 | 29 | 31 | 31 | 28 | 26 | 26 | 26 | 26 | 28 | 29 | 30 | 27 | 26 | 26 |
| Ishigakijima | 32 | 31 | 29 | 29 | 31 | 32 | 29 | 27 | 27 | 27 | 27 | 29 | 31 | 31 | 29 | 27 | 26 | 26 | 26 | 28 | 29 | 29 | 28 | 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.
