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Red Signal Daily maximum temperature reaches 38°C for three consecutive daysOrange Signal Daily maximum temperature reaches 38°C or daily maximum temperature reaches 36°C for three consecutive daysYellow Signal Daily maximum temperature reaches 36°C
Area | Signal |
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Area | Signal |
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Signal | Criteria & Reminders |
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Yellow |
Daily maximum temperature reaches 36°C. Reduce outdoor activities or work. Avoid strenuous exercise. Protect yourself from direct sun, stay hydrated, and be aware of the signs and symptoms of heat-related illness. Keep the indoors cool and well-ventilated. Take measures to cool off if necessary, such as using fans or applying ice packs. Pay attention to those at greater risk of heat-related illnesses, such as the elderly, infants and young children, people with chronic conditions (including obesity), people on certain medications, disadvantaged people, and people who work or do sports outdoors. Reduce the duration of staying in high-temperature environment. |
Orange |
Daily maximum temperature reaches 36 °C for three consecutive days or daily maximum temperature reaches 38°C. Avoid unnecessary outdoor activities, work or exercise. Protect yourself from direct sun, stay hydrated, and be aware of the signs and symptoms of heat-related illness. Keep the indoors cool and well-ventilated. It is advisable to take measures to cool off, such as using fans or applying ice packs. Pay extra attention to those at greater risk of heat-related illnesses, such as the elderly, infants and young children, people with chronic conditions (including obesity), people on certain medications, disadvantaged people, and people who work or do sports outdoors. Stay away from high-temperature environment. |
Red |
Daily maximum temperature reaches 38 °C for three consecutive days. Avoid any outdoor activities. If you have to go out, make sure to protect yourself from direct sun, stay hydrated, and be aware of the signs and symptoms of heat-related illness. Stay indoors. It is strongly recommended that you take measures to cool off, such as using fans or applying ice packs. Make sure that those at greater risk of heat-related illnesses are well taken care of, such as the elderly, infants and young children, people with chronic conditions (including obesity), people on certain medications, disadvantaged people, and people who work or do sports outdoors. Stay away from high-temperature environment. |