Room Temperature Thermometer is your all-in-one digital thermometer, AI health assistant, air quality meter, and weather app, trusted by 1M+ downloads as a complete indoor thermometer and ambient temperature sensor.
INDOOR & OUTDOOR TEMPERATURE
The ambient sensor reads your indoor room temperature (place your phone flat with the screen off for about 5 minutes for the most accurate reading), while outdoor temperature comes live from the nearest weather stations using GPS or a manually chosen location. Every reading includes Feels Like temperature, a 0-100 Comfort Score, and one-tap switching between Celsius, Fahrenheit, and Kelvin, with calibration options for extra precision.
AI HEALTH TIPS
AI reads your real-time location, room temperature, AQI, and humidity, then delivers a personalized health tip on your home screen, like drinking more water, avoiding outdoor exercise, or opening your windows, in your own language, every day and every season.
SMART NOTIFICATIONS, FULLY CONTROLLED
Turn notifications on or off anytime, and choose your frequency: every 3 hours for real-time updates, every 6 or 12 hours for regular daily and morning/evening summaries, every 24 hours for a daily digest, or every 2 days for minimal alerts. Smart Alert Rules let you set your own AQI and temperature thresholds for instant alerts, with a live preview while you set them up.
AIR QUALITY METER
Track the Air Quality Index (AQI) with a full 24-hour history, plus detailed pollutant levels including PM2.5, PM10, CO, NO2, SO2, and O3, hour by hour.
HYGROMETER & BAROMETER
A built-in hygrometer shows humidity and dew point, useful for a baby's room, houseplants, or general home comfort, while the barometer shows air pressure in hPa and inHg. Wind speed and direction are shown alongside Feels Like temperature, and a UV Index and sunrise/sunset times are calculated for your exact location.
5-DAY FORECAST
Plan your week with a 5-day forecast covering temperature, humidity, rain, and wind.
PHONE TEMPERATURE
Monitor your device's own CPU and battery temperature in real time to help prevent overheating, alongside battery health, percentage, and voltage.
HOME SCREEN WIDGET
A modern widget with Compact and Comfort card styles, polished chips and info panels, and full support for both Light and Dark themes. Widget Settings inside the app let you customize everything and sync instantly across all your widgets.
TWO HOME SCREEN STYLES
Choose a Classic or Modern layout for the main screen, switchable anytime, with condition-based weather animations and reliable fallbacks for every scenario.
FAVORITE PLACES
Save multiple favorite locations with separate manage and search-map flows, making it easy to switch cities and keep every reading tied to the right place.
PERFECT FOR
Checking a baby's room, verifying an AC room is actually cooling, monitoring an office or home, tracking humidity for plants and greenhouses, watching phone CPU and battery health, and checking UV index and AQI before outdoor activities.
PRIVACY FIRST
Full notification control, on or off with custom frequency, and no forced permissions or unnecessary data collection.
FREQUENTLY ASKED QUESTIONS
Q-1: Can my phone measure room temperature?
Ans: Yes, using the ambient sensor. Lay your phone flat with the screen off for about 5 minutes for the best accuracy.
Q-2: How does the AI work?
Ans: It uses your live location, temperature, AQI, and humidity to generate personalized tips updated daily.
Q-3: Can I control notifications?
Ans: Choose every 3, 6, 12, or 24 hours, or every 2 days, or turn them off completely.
Q-4: Does it work offline?
Ans: Indoor and phone temperature work offline; AQI, weather, and AI tips need internet.
Q-5: Which units are supported?
Ans: Celsius, Fahrenheit, and Kelvin.
Q-6: Is it free?
Ans: Yes, completely free, no sign-up required.
Q-7: How accurate is outdoor data?
Ans: Sourced from the nearest certified weather stations for neighborhood-level precision.
AI weather tips, AQI, widgets, comfort score & indoor/outdoor temperature.