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Weather Calculators

Ever need to quickly compute a temperature in Fahrenheit to Celsius? Or maybe you needed to go from Celsius to Fahrenheit. Sure the formula is simple, but try to make the calculation in your head while on final with ATC on your back. Then when it comes to things like windchill, relatively humidity, and heat index, the formulas are likely too hard to remember, nevertheless any computations with those formulas. But thanks to these scripts written by Ron Moore of the Birmingham, Ala., office of the National Weather Service, the answers are just a few clicks away.

Temperature Conversion
Enter a number, then click on the appropriate button to see the result.

Windchill Calculation

Relative Humidity Calculation

Heat Index Calculation

Valid entries are, air temperatures greater than 80 °F ( 27 °C ), dew point temperatures greater than 65 °F ( 12 °C ), and relative humidities higher than 40 percent.

Original java script by Ron Moore of the Birmingham, AL, National Weather Service

(For Flight Simulation Use Only)