Best Relative Humidity Apps

Humidity Checker

Check your indoor environment.

Free

This app helps you monitor and maintain optimal indoor humidity levels for better health and comfort. It calculates the amount of water needed to reach the ideal 40-60% RH range, using scientific formulas and providing simple visual indicators.

Hygrometer Barometer

Discomfort Index Calculator

Free

This app measures relative humidity and calculates the discomfort index using your current location. It displays humidity in a badge and offers barometric readings for compatible devices. Use it to gauge outdoor conditions for appropriate clothing choices.

Humidity Free

by Piet Jonas

Free

Displays current outdoor humidity based on your location and nearby weather stations. The background color visually represents humidity levels, and you can wipe the screen to clear it.

Psychrometer °F

Dew Point, Wet Bulb Calculator

Free

This app calculates thermal comfort by evaluating heat, cold, dryness, and moisture. It provides detailed air property calculations and indicates if conditions are within a comfortable range, with easy dial input and color-coded temperature.

Dew Point Humidity Calculator

Relative Wet Bulb Temperature

Free

This utility app calculates dew point, humidity, and wet bulb temperature with speed and accuracy. It's designed for weather, HVAC, and scientific applications, eliminating the need for manual calculations or physical tools.

Calculator of Air

Psychrometric Charts Tool

Free

This tool calculates humidity-related air properties with a calculator-like interface. It supports six key parameters and provides accurate results even under extreme conditions. Ideal for HVAC, cleanrooms, and industrial drying.

Absolute Humidity – Calculator

Convert Relative to Absolute

Free

This app helps manage indoor humidity by comparing indoor and outdoor conditions. It provides personalized advice on when to ventilate your rooms to maintain optimal air quality and prevent issues like mold or respiratory discomfort.

Hygrometer - Humidity Meter

Damp & Mold Risk by Room

Free

This app helps you monitor and prevent mold and condensation by calculating surface humidity, not just room humidity. It provides real-time alerts based on surface temperature and outdoor weather forecasts, and advises on optimal times to ventilate your home.

Calculate Comfort

Psychrometric calc: dew point

Free

This app analyzes atmospheric conditions by calculating various air properties like relative humidity, dew point, and enthalpy. It provides visual indicators for comfort levels and allows for easy adjustment of input values using a dial. Advanced features include weather data fetching and unit conversions.

Absolute Humidity

for HomeKit & SwitchBot Meters

Free

This app calculates and displays absolute humidity using temperature and relative humidity data from connected devices. It helps users understand their environmental comfort level with numerical values and visuals. A Pro version offers weather forecasts for any location.

HumidCalc

Precision Moist Air Calculator

Free

This app calculates various humidity and air property indicators using weather data. It's suitable for general users, engineers, and agricultural applications, offering precise calculations for dew point, relative humidity, and heat stress indices.

Hygrometer - Air humidity

Environment dry comfort wet

$2.99

This app measures outdoor air humidity and provides current weather conditions for your location. It automatically detects your location and displays humidity percentages, local weather, and allows you to search for and save favorite cities.

Humidity Window - Stoßlüften

Ventilation & Mold Risk

Free

This app acts as a digital hygrometer, tracking outdoor humidity and providing personalized advice on when to ventilate your home. It helps prevent mold growth and improve indoor air quality by suggesting optimal times to open windows. Monitor key weather metrics and receive instant updates via a home widget.