Relative humidity measures how much moisture is in the air compared to how much it could hold at a given temperature. It is simply the dew point temperature divided by the air temperature, times 100.

A man looks at air conditioners displayed inside an electronics store, on a hot summer day in New Delhi in April 9. | Reuters On April 30, Mumbai was not having an unusually hot day at 33.9 degrees ...

Your home can feel stuffy, chilly, or perfectly “normal” even when the thermostat barely moves, and humidity is the quiet reason why. Once you understand the narrow band of moisture that keeps air ...