Weather Calculators

Browse weather tools. Each link opens a dedicated calculator with instructions, formulas, examples and related references.

• Wind Chill Calculator

  Estimate wind chill with the NWS formula for qualifying cold temperatures and wind speeds.

• Heat Index Calculator

  Estimate heat index with the NWS Rothfusz regression for hot, humid conditions.

• Dew Point Calculator

  Estimate dew point from air temperature and relative humidity using the Magnus approximation.

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