Weather

Heat index

hiːt ˈɪndeks

noun

What does Heat index mean?

How hot it feels with humidity factored in.

Example sentence

"The heat index hit 105 in St. Louis."

American usage tip

Summer version of windchill.

Related Weather words

Flurries
Light snow that doesn't accumulate.
Clear skies
No clouds.
Under the weather
Feeling slightly ill.
Flash flood
Sudden dangerous flooding.
Thunderstorm
A storm with thunder and lightning.
Tornado watch
Conditions are right for tornadoes.
Bundle up
To dress warmly in layers.
Forecast
The weather prediction.

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