Weather Calc
Weather Calc Summary
Weather Calc is a mobile iOS app in Weather by Black Cat Systems. Released in Feb 2009 (17 years ago). It has 5.00 ratings with a 4.40★ (good) average. Based on AppGoblin estimates, it reaches roughly 19 monthly active users . Store metadata: updated Jul 28, 2025.
Store info: Last updated on App Store on Jul 28, 2025 .
4.4★
Ratings: 5.00
Screenshots
App Description
If you’re a pilot, you often need to make lots of weather related calculations. Now there’s an easy solution, as close as your iPhone.
Weather Calc performs the following weather relation calculations:
Altimeter Setting - compute the altimeter setting based on elevation and station pressure
Cricket Temperature - just for fun! This lets you estimate the temperature based on the chirp rate of a cricket
Heat Index - compute the heat index based on the temperature and relative humidity
Pressure - convert between hPa, atmospheres, psi, and inches and mm of mercury (Hg)
Relative Humidity - compute the wet bulb and dewpoint based on the temperature, pressure, and relative humidity
Speed Of Sound - displays the speed of sound in various units, given the temperature
Standard Atmosphere - compute the temperature, pressure, density, viscosity, speed of sound, and more
Station Pressure - compute the station pressure based on the elevation and altimeter setting.
Temperature - convert between degrees Fahrenheit, Celsius, Kelvin, and Rankine
Virtual Temperature - compute the virtual temperature based on the temperature, dewpoint, and pressure
Vapor Pressure - com[ute the saturated and actual vapor pressure, as well as relative humidity
Wet Bulb - compute the dewpoint and relative humidity based on the temperature, pressure, and wet bulb reading
Wind Chill - compute the wind chill based on the temperature and wind speed
Wind Speed - convert between knots, kilometers/hour, meters/second, miles/hour, feet/second
Buy your copy now, and let Weather Calc take the drugery out of weather related calculations.