Baby Room Temperature & TOG Guide
Enter the temperature you measured in the room where your baby sleeps to see it against the 16-20 °C range, and what to change in the room, never in the crib.
Change the room, not the bedding
A room thermometer takes the guesswork out. If the room drifts outside 16–20°C, change the room: warm it or cool it. Do not add blankets, a hat or extra layers; the crib stays bare with a fitted sheet only, and your baby sleeps on their back, in your room but not your bed.
For the sleep sack, the Sleep-Sack TOG Calculatorreads the typical label band for the measured temperature; your sack’s own label chart decides.
Frequently Asked Questions
What is the recommended room temperature for a sleeping baby?
The Lullaby Trust (UK): "The recommended room temperature for babies is 16-20°C so that they don’t get too hot." The AAP sets no number; it says "Overheating can increase the risk of SIDS." Use a room thermometer and enter the reading here.
The room is cold. Should I add a blanket or more layers?
No. Warm the room toward the range instead. The AAP lists blankets among the soft objects and loose bedding that "can increase your baby's risk of entrapment, suffocation or strangulation", at every age in the first year, and says a baby needs only one more layer than an adult.
How do I check if my baby is too warm?
The Lullaby Trust: feel your baby's chest or the back of their neck, and "If your baby’s skin is hot or sweaty, remove one or more layers of bedclothes or bedding." The AAP adds: "Don't put a hat on your baby while indoors once you're home from the hospital."
Is this medical advice?
No. It compares the reading you enter with a published range and quotes the AAP and The Lullaby Trust. Follow current safe sleep guidance from your pediatrician or health service.
Informational only: it compares your reading with The Lullaby Trust’s range and quotes the AAP. Not medical advice. Follow current safe sleep guidance and consult your pediatrician with any concern.