OpenWindow
OpenWindow helps you decide when the air outside is worth letting in.
Check whether it is a good time to open your windows or go outside using local weather and air-quality conditions. OpenWindow combines temperature, humidity, precipitation, wind, visibility, UV, and air-quality data into clear, practical recommendations.
Instead of making you interpret every weather metric yourself, OpenWindow gives you simple guidance for two everyday questions:
Is it a good time to open the windows?
Is it a good time to go outside?
Features:
Current recommendations for windows and outdoor activity
Hourly outlooks so you can plan around better conditions
Weather and air-quality data powered by Open-Meteo
Current-location lookup with optional location permission
Manual location search if you prefer not to use device location
Saved default location for quick checks
Unit preferences for temperature, wind, visibility, and more
Light and dark mode support
No account required
OpenWindow is built for quick, low-friction decisions: checking the room before opening a window, planning a walk, timing errands, or seeing whether air quality makes staying inside the better call.
Location access is optional and used only to fetch local weather and air-quality data. You can always search for a location manually instead.