๐ค๏ธ Weather
Weather Severity Index Calculator
Judging a day by temperature alone misses the days that actually go wrong, because a mild temperature with high wind and heavy rain is worse to be out in than a cold clear one. Scoring the individual hazards and weighting them gives a single number that matches how the day feels.
How it works
Temperature
Wind speed
Precipitation
Visibility
Relative humidity
Precipitation type
Severity index
Category
Temperature score
Wind score
Precipitation score
Visibility score
Main hazard
Advice
Frequently asked questions
How do I use the Weather Severity Index Calculator?
Fill in the fields above โ the result recalculates instantly as you type. Everything runs in your browser, so the values you enter are never collected or stored.
Is this calculator free?
Yes. It is completely free, requires no account, and works on phones, tablets and desktops.