Check if your nursery’s temperature and humidity are in the ideal range for baby sleep (20–22°C / 68–72°F and 40–60% RH). Get instant status and step-by-step actions for rooms that are too hot, too cold, too dry, or too humid.
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About the Room Comfort Checker — Nursery Temperature & Humidity Targets
The Room Comfort Checker helps you maintain a safe and cozy nursery environment by evaluating temperature and humidity. Babies sleep best when the room is within 20–22°C (68–72°F) and 40–60% relative humidity (RH). Staying in these ranges supports restful sleep and reduces risks of overheating, dryness, or excess dampness.
Ideal Ranges (Quick Reference)
Metric |
Ideal Range |
Why it matters |
Temperature |
20–22°C (68–72°F) |
Promotes safe, comfortable sleep and reduces overheating risk |
Humidity |
40–60% RH (aim 45–55%) |
Supports breathing, prevents dryness, reduces mold growth |
How It Works
- Enter your room’s temperature (°C/°F) and humidity (% RH).
- Get a status reading (e.g., Cool • Dry, Warm • Humid).
- Follow tailored action steps to adjust HVAC, airflow, and sleep sack TOG layers.
- Re-check after 20–30 minutes, and always fine-tune based on your baby’s neck and torso warmth.
Targeted Actions
- Too Hot / Warm
- Improve airflow with a fan (not directly on baby).
- Lower thermostat, use blinds or blackout curtains during the day.
- Dress baby in lighter, breathable clothing and use a lower-TOG sleep sack.
- Too Cold / Cool
- Reduce drafts and pre-warm the room.
- Add one thin layer or switch to a higher-TOG sleep sack.
- Too Dry
- Run a cool-mist humidifier to reach ~45–55% RH.
- Avoid over-heating or excessive ventilation that dries the air.
- Use saline drops or spray if congestion is an issue.
- Too Humid
- Increase ventilation or use a dehumidifier/AC.
- Reduce or turn off the humidifier.
- Address moisture sources and clean surfaces to prevent mold.
Pro Tips for Accurate Readings
- Place the thermometer/hygrometer at crib level, away from vents, windows, or direct sun.