から: 2026/06/22, 12:00
に: 2026/06/22, 23:59

Extreme thermal stress is expected. The perceived temperature will be extremely high throughout the day and remain elevated at night, with no significant cooling expected, for at least three consecutive days. Heat exhaustion and heatstroke are likely, even with a short stay outdoors or light physical activity

から: 2026/06/21, 05:57
に: 2026/06/22, 11:59

High thermal stress is expected, with a high felt temperature persisting for at least two consecutive days. Heat exhaustion is likely, and heatstroke is possible during prolonged outdoor exposure or physical activity.