WBGT Singapore Now: Live Heat Stress by Area
Heat stress by station
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- Low <31°C
- Moderate 31–33°C
- High ≥33°C
Heat stress (WBGT)
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Source: NEA via data.gov.sg. Updated every 15 minutes.
NEA heat stress advisory
For the general population planning prolonged outdoor activities. Source: NEA, Manage heat stress when outdoors (June 2026).
Low heat stress
WBGT below 31°C
- Activity
- Continue normal activities
- Action
- Hydrate normally
- Attire
- Wear normal attire
Moderate heat stress
WBGT 31°C to below 33°C
- Activity
- Reduce outdoor activities
- Take regular breaks (indoors or under shade)
- Action
- Drink more fluids
- Monitor your body for signs and symptoms of heat-related illness
- Attire
- Avoid multiple layers of clothing
- Use an umbrella or wear a hat
High heat stress
WBGT 33°C and above
- Activity
- Minimise outdoor activities; stay under shade where possible
- Take more frequent and/or longer breaks (indoors or under shade)
- Action
- Drink more fluids
- Monitor your body for signs and symptoms of heat-related illness
- Cool actively during breaks (e.g. sponging, pouring water over arms and legs)
- Attire
- Avoid multiple layers of clothing
- Use an umbrella or wear a hat
- Wear lightweight, light-coloured clothing in thin, absorbent material
Take extra care if you are elderly, a child or infant, pregnant, ill, recently recovered or living with a chronic condition, or if you have recently arrived from a cooler climate. Outdoor workers should follow the Ministry of Manpower's guidelines and students their school's; the advisory does not apply to the SAF and Home Team, which have their own heat injury measures.
How this works
Readings come live from the National Environment Agency (NEA) through data.gov.sg. NEA measures the Wet Bulb Globe Temperature (WBGT) at about 30 stations, many at stadiums, parks and other busy outdoor spots, and reports a 15-minute average every 15 minutes. Each reading on this page shows the time it is for, and the chart shows the station's readings over the last few hours.
WBGT is not the air temperature. It combines air temperature, humidity, wind and the sun's radiant heat: NEA calculates it as 0.7 × natural wet-bulb temperature + 0.2 × black globe temperature + 0.1 × air temperature. It can be well below the air temperature in the shade and higher in humid, sunny conditions.
NEA's heat stress levels are Low (WBGT below 31°C), Moderate (31°C to below 33°C) and High (33°C and above). The advice shown is NEA's heat stress advisory for the general population planning prolonged outdoor activities (June 2026). Moderate and High usually occur in the late morning and afternoon, and High is more frequent in April and May.
Search a postal code or place to see the nearest station. Outdoor workers should follow the Ministry of Manpower's guidelines, and students their school's.
FAQs
What WBGT is high heat stress in Singapore?
A WBGT of 33°C or above is High heat stress. NEA advises minimising outdoor activities, staying under shade, taking more frequent or longer breaks, drinking more fluids and cooling actively during breaks.
What is the difference between WBGT and temperature?
Air temperature is measured in the shade. WBGT also accounts for humidity, wind and sunlight, so at the same 32°C air temperature, NEA's example shows a WBGT of 30.6°C on a cloudy midday and 32.3°C under hot midday sun.
Is it safe to exercise outdoors at moderate heat stress?
At Moderate heat stress (WBGT 31°C to below 33°C), NEA advises reducing outdoor activities, taking regular breaks indoors or under shade, drinking more fluids and watching for signs of heat-related illness.
How often is the WBGT updated?
NEA reports WBGT as a 15-minute average, updated every 15 minutes. This page checks for new readings every 5 minutes.