Meteorology Calculators

Free online weather and atmosphere calculators for dew point, humidity, wind chill, air density, UV index, and more.

Calculate the density of air at any temperature, pressure, and humidity. Essential for aerodynamics, aviation, and physics calculations.

Calculate atmospheric air pressure at any altitude using the barometric formula. Useful for aviation, hiking, cooking, and science.

Calculate the dew point temperature from air temperature and relative humidity. Understand when condensation, fog, and moisture problems will occur.

Understand your local AQI reading. Get health recommendations based on air quality level and sensitive groups.

Calculate atmospheric pressure at any altitude using the barometric formula.

Estimate your altitude above sea level from barometric pressure readings. Uses the hypsometric formula for accuracy.

Calculate safe sun exposure time based on UV index level, skin type, and SPF sunscreen for sunburn prevention.

Convert wind speed to Beaufort scale number and see the expected conditions, effects, and safety warnings.

Calculate the boiling point of water at any altitude. See how elevation affects cooking and water boiling temperature.

Calculate the dew point from temperature and relative humidity. See comfort level and condensation risk. Supports Fahrenheit and Celsius.

Calculate the feels-like temperature based on air temperature and relative humidity. Includes danger level warnings for heat-related illness.

Estimate how much water your pool loses to evaporation each day based on pool area, temperature, humidity, and wind.

Calculate atmospheric pressure at any altitude. Supports feet and meters with results in multiple pressure units.

Calculate relative humidity from dry bulb and wet bulb temperatures. Supports Fahrenheit and Celsius with psychrometric formulas.

Calculate the wind chill (feels-like) temperature from air temperature and wind speed. Supports Fahrenheit/Celsius and mph/km/h.