Heat Illness Prevention Information: Current WBGT and Forecast

(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 Aug 25 12:00

Sapporo

20.6

Aomori

27.6

Akita

28.1

Morioka

27.3

Sendai

31.6

Yamagata

28.9

Fukushima

30.9

Mito

31.9

Utsunomiya

32.3

Maebashi

30.5

Kumagaya

32.0

Tokyo

32.2

Choshi

30.5

Yokohama

29.9

Nagano

30.2

Kofu

31.0

Shizuoka

31.5

Nagoya

31.7

Gifu

31.7

Tsu

30.5

Niigata

32.1

Toyama

29.6

Kanazawa

29.9

Fukui

31.2

Hikone

31.2

Kyoto

30.7

Osaka

30.3

Kobe

29.6

Nara

30.5

Wakayama

29.6

Okayama

29.9

Hiroshima

28.1

Matsue

31.9

Tottori

29.5

Shimonoseki

29.9

Tokushima

30.5

Takamatsu

32.1

Matsuyama

31.6

Kochi

31.7

Fukuoka

31.9

Oita

31.4

Nagasaki

30.5

Saga

30.9

Kumamoto

29.0

Miyazaki

30.8

Kagoshima

31.2

Naha

29.6

Daily Maximum WBGT and Forecast

	08/25	08/26	08/27	08/25 15	08/25 18	08/25 21	08/25 24	08/26 03	08/26 06	08/26 09	08/26 12	08/26 15	08/26 18	08/26 21	08/26 24	08/27 03	08/27 06	08/27 09	08/27 12	08/27 15	08/27 18	08/27 21	08/27 24
Sapporo	25	24	26	25	23	21	20	19	19	22	23	24	22	22	21	20	20	24	26	25	23	22	21
Kushiro	20	22	25	20	18	17	17	16	17	20	22	20	19	19	18	18	19	22	25	23	21	21	21
Aomori	29	28	27	27	25	25	24	22	23	27	28	24	24	23	22	22	22	25	27	26	24	24	23
Sendai	32	29	29	32	27	26	26	26	25	26	29	28	26	26	25	25	24	24	29	26	25	25	24
Tokyo	32	32	30	30	27	27	26	26	26	29	32	30	27	27	26	25	27	29	30	28	25	23	23
Nagano	31	30	28	31	27	25	23	22	22	26	29	30	26	25	24	23	22	26	28	26	24	24	24
Nagoya	34	32	29	34	28	27	27	27	27	30	32	31	29	27	28	27	27	28	29	29	28	28	27
Niigata	32	29	28	31	27	27	27	25	26	27	29	27	27	26	25	24	23	26	28	26	25	24	23
Kanazawa	31	32	30	30	28	28	28	26	26	29	32	32	27	28	27	26	26	27	30	29	27	24	24
Osaka	32	32	30	32	28	27	28	27	26	29	31	32	29	27	28	26	26	29	30	29	27	27	26
Hiroshima	32	32	31	32	30	28	28	27	26	29	31	32	29	28	28	28	27	29	30	31	29	28	28
Matsue	32	33	32	31	28	27	26	24	25	30	33	30	27	27	26	26	26	29	32	30	29	28	27
Kochi	33	32	31	33	28	28	26	25	25	28	32	30	27	28	27	26	25	29	31	30	28	28	27
Fukuoka	33	35	33	33	29	27	27	27	27	31	35	34	30	29	28	29	28	30	33	32	29	28	28
Kagoshima	32	32	32	31	28	27	28	28	27	29	32	31	28	27	27	27	26	28	32	29	28	29	28
Naze	30	30	30	27	26	27	27	27	27	27	30	29	27	27	27	26	26	30	30	29	27	27	27
Naha	30	29	32	29	26	26	26	26	25	27	29	27	27	27	27	27	26	30	32	30	29	28	27
Ishigakijima	30	30	31	29	28	26	26	26	26	28	29	30	28	26	26	27	27	29	30	31	28	27	28

Note

WBGT index is one of the empirical indices representing the heat stress to which an individual is exposed. (ISO7243)

Hokkaido	Tohoku	Kanto	Koshin
Tokai	Hokuriku	Kinki	Chugoku
Shikoku	Kyushu	Okinawa

Heat Stress Index: WBGT

Current WBGT and Forecast

WBGT monitoring

Daily Maximum WBGT and Forecast

Note