Keep your newborn in a comfortably cool environment, use working air conditioning when possible, and move to an air-conditioned location if your home is too hot or the power fails. Infants cannot cool or hydrate themselves or tell you they feel unwell, so plan to check on them actively. Continue breast milk or formula—do not give water to a baby under six months—and keep the baby’s sleep space clear and safe.
Make a cooling plan before the heat arrives
There is no single indoor temperature target that applies to every newborn and home. Use air conditioning where available, watch your baby’s condition, and arrange another cool place if your home cannot stay comfortably cool. The CDC recommends using air conditioning or finding a location that has it; the EPA also recommends keeping indoor air cool with air conditioning.
As an Amazon Associate I earn from qualifying purchases.
If your home has working air conditioning
Use it during extreme heat. Reduce the heat entering the home by covering windows that receive direct morning or afternoon sun with shades, drapes, roller shades, awnings, or louvers. The EPA notes that outdoor awnings and louvers can block more heat than indoor shades. Shading can help, but it is not a substitute for air conditioning when the home remains too hot.
If you have no air conditioning, it fails, or power goes out
Choose a safe, air-conditioned destination and plan how you will get there before a heat emergency. Cooling centers, libraries, and malls may offer relief, but check local hours and availability rather than assuming a particular place is open. The CDC suggests calling 2-1-1, checking the National Center for Healthy Housing’s cooling-center listings, or contacting local health or emergency-management officials. Ready.gov also advises planning ahead for extreme heat.
#1 Best Overall
- Face Icon Comfort Indicator: Humidity temperature gauge features face icons to indicate DRY/COMFORT/WET air conditions, quickly informs you how to adjust your humidifier or dehumidifier to achieve optimal comfort.
- Highly Accurate Sensors: This temperature humidity sensor features a high accuracy of +/-1°F/°C and +/-2% to 3%RH, making it ideal for measuring dynamic environments like greenhouses.
- Fast Refresh Rate: This digital indoor thermometer refreshes every 10 seconds to provide the latest updates for temperature and humidity readings.
- Compact Display with Large Digits: This digital thermometer indoor outdoor features a compact LCD display with large bold digits, allowing you to read the room thermometer indoor from any angle and distance.
- Mini Size, 3-Way Mount, Use Anywhere: Compact mini humidistat with 3 placement options — Tabletop Stand / Magnetic Back / Hanging Mount, easily fits a nursery, baby room, craft room, grow tent, greenhouse, chick brooder, RV, outdoor patio, kitchen, guitar room, office or cellar.
If cooling costs or energy-related home repairs are a barrier, the EPA directs households to the Low Income Home Energy Assistance Program (LIHEAP); check current eligibility and local availability.
Manage sun, windows, and indoor heat
Close windows when the outdoor air is hotter than the indoor air; open them when it is cooler, while considering outdoor air quality before ventilating. If air quality is poor or ventilation is limited, avoid or delay indoor activities that worsen it. Use the stove and oven less when the home lacks air conditioning, as the CDC recommends.
Rank #2
- Wellness Indicator: This humidity meter with humidity level icon indicates air conditions - DRY/COMFORT/WET, allowing this humidity sensor to ensure you’re always aware of changes to your home/household with just a quick glance
- High Accuracy & Quick Refresh Rate: This inside thermometer features a high accuracy of +/-2 to 3%RH and +/-1°F, making it ideal for measuring fluctuating readings like those found in a greenhouse, data measurements are updated every 10 seconds to give you the latest updates on your environment
- High & Low Records: This hygrometer digital thermometer displays high/low temperature and humidity levels to allow you to make proper comparisons using your home’s data
- Healthier Home & Environment: This thermometer hygrometer with temperature and humidity monitor ensures proper indoor humidity that achieves important health benefits for skin and allergen, can also serve as a refrigerator thermometer, freezer thermometer, reptile thermometer, soil thermometer, humidor hygrometer, cigar hygrometer, and more
- Practical Design: This indoor room thermometer features a tabletop stand and a magnetic back, place the temperature monitor on your counter or fridge; °F/°C selector; Includes 1 AAA battery
Fans are not a substitute for air conditioning or relocation when a room is dangerously hot. Guidance differs in how it describes temperature thresholds: the CDC cautions that above 90°F (32°C) a fan can increase body temperature; the EPA advises against using fans in a closed room and against electric fans for cooling in the mid-90s or higher; the AAP says to keep fans a safe distance from children and not direct one toward a child when the room is above 90°F. In extreme heat, do not point a fan at your baby.
Quick wins for a faster PC:
Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Keep your newborn cool and fed
Use light clothing and watch for overheating
Dress your baby in light, loose clothing and avoid overdressing. The AAP’s newborn guidance says clothing may be reduced to a single layer when the temperature is above about 75°F (24°C); this is hot-weather clothing advice, not a heat-illness threshold. After coming home from the hospital, do not put an indoor hat on the baby. Check for sweating, a hot chest, or flushed skin. If your baby is sweating, move them out of the sun and cool them.
Rank #3
- [High Accuracy & 5s Fast Refresh]: Built-in smart temperature humidity sensor, the indoor thermometer is accurate to ±1°F while humidity is ±5%RH. Enjoy precise data from the room thermometer indoor every 5 seconds
- [Air Comfort Indicator]: DOQAUS humidity meter features 3 different face icons to indicate DRY/COMFORT/WET air condition. Remind you to adjust your humidifier or dehumidifier accordingly and help you will always live in the most comfortable environment
- [2.3in Easy-to-Read LCD Display]: The thermometer for house features a 2.3in clear LCD display with large bold numbers, allowing you to read the digital from any angle. The hygrometer digital is lightweight, compact, and easy to carry
- [Multiple Mounting Options]: The room thermometer indoor has 3 mounting options - Hanging Hole / Tabletop Stand / Magnet Attaching to be conveniently placed anywhere, such as baby room, kitchen, bedroom, greenhouse, reptiles terrarium, cellar, and incubator or other areas
- [Easy to Use]: Just press ℉/℃ Switchable button, then you can choose Celsius or Fahrenheit temperature unit. Also, the hygrometer is great for space-saving. Compact and lightweight design allows you easily put it in your pocket and take it anywhere you want
Continue breast milk or formula; do not offer water
For a baby under six months, do not give water in hot weather. A breastfed baby may need additional breast milk, and a formula-fed baby additional formula. Ask your pediatrician about feeding or hydration concerns, particularly if your newborn seems unwell or is feeding poorly.
Check diapers and keep your baby out of direct sun
Concentrated urine can be a sign of dehydration. Treat it as a reason to act and seek clinical advice as appropriate, not as a substitute for medical assessment. Keep your baby out of direct sunlight where feasible, and never leave a baby in a parked car—even with the windows open.
Rank #4
- Know the True Nursery Temperature – Your home's thermostat doesn't tell you what your baby is actually experiencing. Mamamoon's patent-pending nursery thermometer measures the temperature and humidity in your nursery, helping you create a more comfortable sleep environment for your little one.
- Takes the guesswork out of sleepwear – Simply glance at the display for easy-to-follow clothing suggestions based on your nursery's temperature. Perfect for newborns through toddlers and especially helpful during late-night wakeups when you don't want to second-guess yourself.
- More than just a thermometer – Dry or humid air can affect comfort. Mamamoon displays both temperature and humidity so you can better understand your baby's sleep environment and know when it may be time to use a humidifier or dehumidifier.
- Compact, easy-to-read design — at just 4 in × 3 in, this nursery thermometer fits neatly on a dresser, shelf, or changing table. The bright display makes it easy to check room temperature and humidity, even during late-night check-ins. The product has a stand included on the back to prop it up.
- Created by a Mom – After countless nights wondering if her baby was too hot or too cold, one mom designed Mamamoon to provide quick, easy guidance in seconds. No apps, no complicated setup—just helpful information when you need it most.
Keep safe-sleep practices in place
Heat precautions do not change the basics: place your baby on their back for sleep on a firm, flat surface that meets U.S. Consumer Product Safety Commission standards. Keep blankets, pillows, pads, bumpers, toys, and other loose items out of the sleep space. Avoid overheating; the AAP says a baby generally needs only one more layer than an adult would wear in the same environment. Check for sweating, a hot chest, or flushed skin, and do not use loose bedding to address warmth.
Free tools Windows power users keep installed
One-click scans. No signup required.
The AAP reports that around 3,500 babies in the United States die suddenly and unexpectedly while sleeping each year; most deaths in this category are due to sudden infant death syndrome or accidental suffocation or strangulation. This figure is not a statistic about heat-related deaths.
Best Value
- Real-Time Precision Monitoring with High Accuracy Sensors: Built with high-precision sensors, this indoor thermometer hygrometer delivers real-time temperature and humidity monitoring with reliable accuracy. It features a wide measuring range from -58°F to 158°F (±1.8°F accuracy) and 10%–99% RH humidity range (±5% RH accuracy). Providing stable data for daily home monitoring.
- Clear Display with Large Digits & Humidity Trend Indicator: This temperature humidity monitor adopts a crisp screen with big digits for effortless at-a-glance reading. It features simple WET/OK/DRY humidity icons plus a 1-hour trend to quickly check indoor humidity. The intuitive visual design fits daily indoor use.
- Compact 2.1×2.6 Inch Design for Multi-scene Monitoring: Measuring only 2.1 x 2.6 inches and fitted with a sturdy stand, this portable room thermometer is space-saving and easy to move. Suitable for home, nursery, bedroom, office, greenhouse, terrarium, reptile habitat, garage, basement and wine cellar. No installation required for convenient multi-scene monitoring.
- Intelligent Auto-Calibration & 5s Fast Data Refresh: Featuring automatic calibration technology, this thermo-hygrometer starts a 3-minute precise auto-calibration after power on. The flashing temperature and humidity readings during operation indicate calibration is in progress. It updates temperature and humidity data every 5 seconds to capture real-time condition changes.
- Ready to Use Out of Box: This user-friendly digital room thermometer comes with a pre-installed AAA battery, supporting direct out-of-the-box use without complex setup. It allows one-click seamless switching between ℉and ℃ units to adapt to different reading habits and regional needs. (Note: The power and ℉/℃ switch is controlled by one single button located on the back of the unit. Short press to turn on the device, and press again to switch between ℉ and ℃.) The complete package includes 1× thermometer hygrometer and 1× AAA battery, saving you the hassle of extra installation.
Know when to get urgent help
Heatstroke is a medical emergency. If you suspect your baby has heatstroke, call 911 or go to an emergency department right away, as the AAP advises. Heatstroke is caused by environmental heat and dehydration; it is different from a fever caused by infection. Babies can develop heatstroke when overdressed in hot, humid conditions.
For a newborn who seems abnormal, is feeding poorly, or shows signs that concern you, contact the baby’s pediatrician promptly. Do not wait for a baby to be able to describe symptoms.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
