Pregnancy can make Singapore’s heat feel even harder to handle. You may find yourself sweating more easily, feeling tired after a short walk or becoming breathless sooner than usual. When hazy weather arrives, those symptoms can feel even more noticeable.
Here is what to know about navigating heat and haze while pregnant, how to read Singapore’s air quality readings and the practical steps you can take on hot or hazy days.
Why heat and haze while pregnant feels more intense
Your body goes through several changes during pregnancy that can make hot weather harder to tolerate. Blood volume increases substantially, while your heart and metabolism work harder to support your growing baby. As your pregnancy progresses, you may also feel warmer and become short of breath more easily.
The goal is not to avoid Singapore’s heat completely. Instead, focus on staying hydrated, keeping cool and giving yourself more time to rest.
Know the signs that you need to cool down
Pay attention to how you feel rather than pushing through discomfort.
Signs that you may be getting dehydrated or overheated include:
• Feeling unusually thirsty
• Dizziness or light-headedness
• Headache
• Weakness or unusual tiredness
• Heavy sweating
• Muscle cramps
• Dark yellow urine
• Feeling faint or unwell
If you develop significant or persistent symptoms, move somewhere cool, rest and drink fluids. If you remain unwell or develop concerning symptoms such as difficulty breathing, fainting, chest pain or confusion, seek medical attention promptly.
Pregnancy symptoms can overlap with signs of heat stress, so it is better to check with your doctor if something feels unusual or different from what you normally experience.
Simple ways to stay cool in the heat
Stay hydrated
Keep a water bottle with you and take regular sips throughout the day, especially when you are outdoors, exercising or in a warm environment.
If you are sweating heavily or have been unwell, ask your doctor whether an electrolyte or oral rehydration drink is suitable.
Wear light, breathable clothes
Choose loose-fitting clothing made from breathable fabrics such as cotton to help you stay comfortable in the heat. Comfortable footwear can also help if your feet swell during pregnancy.
A wide-brimmed hat and handheld fan can be useful for short outdoor trips. At home, use fans or air-conditioning, keep curtains closed during the hottest part of the day, and try a cool shower or damp towel when you feel overheated.
Plan around the heat
Whenever possible, schedule outdoor activities for cooler parts of the day and take breaks in shaded or air-conditioned places.
If you exercise during pregnancy, follow your healthcare provider’s advice and consider reducing the intensity, duration or timing of your workout on particularly hot days.
Check Singapore’s air quality before heading outside
When haze is present, heat is not the only thing to consider. Fine particulate matter, including PM2.5, can irritate the eyes, nose and throat and affect the lungs and heart.
Singapore’s National Environment Agency (NEA) identifies pregnant women as a group that may be more sensitive to the effects of haze and advises pregnant women to reduce exposure to haze for the health of their unborn baby.
NEA provides both 24-hour PSI forecasts and 1-hour PM2.5 readings. The 24-hour PSI is useful for planning activities ahead, while the 1-hour PM2.5 reading gives you a better indication of current conditions when deciding whether to head outdoors.
For pregnant women, NEA’s guidance is:
• PSI 0–100: Normal activities are generally appropriate
• PSI 101–200: Minimise prolonged or strenuous outdoor physical activity
• PSI 201–300: Minimise outdoor activity
• PSI above 300: Avoid outdoor activity
These are general guidelines. If you already have a heart or lung condition, have developed breathing difficulties or have been advised by your doctor to take additional precautions, follow your doctor’s advice.
Give yourself more breathing room during hot and hazy days
Hot, hazy days can make outdoor activities feel more exhausting than usual. You may become tired or breathless sooner, particularly later in pregnancy.
Instead of trying to maintain your usual pace, build more breaks into your day.
For example, if you normally walk to a nearby destination, consider taking public transport or a taxi when the weather and air quality are poor. If you have errands to run, combine them into one short trip rather than making several journeys.
You do not need to prove that you can manage as much as you did before pregnancy. Adjusting your routine is part of taking care of yourself.
Know when to contact your doctor
Heat and haze can cause temporary discomfort, but some symptoms should not simply be attributed to the weather.
Contact your doctor or seek medical attention if you experience:
• Persistent or worsening difficulty breathing
• Chest pain or a racing or irregular heartbeat
• Fainting or severe dizziness
• A severe or persistent headache
• Blurred vision or other sudden changes in vision
• Significant swelling that develops suddenly
• A fever
• Reduced or noticeably changed fetal movements, particularly after you have started regularly feeling your baby’s movements
If you are concerned about your symptoms, do not wait for the PSI or weather to improve before seeking advice.
