🪟 Window Weather

A simple answer to: “Should I open the windows?”
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Waiting for weather…
Allow location access to get a recommendation.
Temperature
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Humidity
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Dew point
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Air quality
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Ventilation sensitivity

Conservative More opportunities
Only alert when outdoor conditions are clearly better.

Next 12 hours

How V1 decides

V1 estimates indoor conditions from recent outdoor temperature and dew point, using a simple thermal-lag model for a typical occupied home. The sensitivity slider changes the thresholds for temperature advantage, moisture advantage, AQI, and minimum useful opportunity duration. Later versions can replace the modeled indoor state with measurements from thermostats and air sensors.