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  2. Dew point - Wikipedia

    en.wikipedia.org/wiki/Dew_point

    A relative humidity of 100% indicates the dew point is equal to the current temperature and that the air is maximally saturated with water. When the moisture content remains constant and temperature increases, relative humidity decreases, but the dew point remains constant.

  3. Humidity - Wikipedia

    en.wikipedia.org/wiki/Humidity

    Relative humidity is an important metric used in weather forecasts and reports, as it is an indicator of the likelihood of precipitation, dew, or fog. In hot summer weather, a rise in relative humidity increases the apparent temperature to humans (and other animals) by hindering the evaporation of perspiration from the skin.

  4. What is the heat index? How humidity and the dew point can ...

    www.aol.com/heat-index-humidity-dew-point...

    The heat index explains why humidity makes a difference. Have you ever checked the temperature and noticed that it "feels" several degrees hotter? The heat index explains why humidity makes a ...

  5. Wet-bulb temperature - Wikipedia

    en.wikipedia.org/wiki/Wet-bulb_temperature

    The wet-bulb temperature is the lowest temperature that may be achieved by evaporative cooling of a water-wetted, ventilated surface.. By contrast, the dew point is the temperature to which the ambient air must be cooled to reach 100% relative humidity assuming there is no further evaporation into the air; it is the temperature where condensation (dew) and clouds would form.

  6. Understanding humidity and the dew point - AOL

    www.aol.com/news/understanding-humidity-dew...

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  7. Dew point depression - Wikipedia

    en.wikipedia.org/wiki/Dew_point_depression

    A lower dew point depression indicates that the air is more moist at a given temperature. [1]: 83 For a constant temperature, the smaller the difference, the more moisture there is, and the higher the relative humidity.

  8. Surface weather observation - Wikipedia

    en.wikipedia.org/wiki/Surface_weather_observation

    The dew point is a saturation point. When the dew point temperature falls below freezing it is called the frost point, as the water vapor no longer creates dew but instead creates frost or hoarfrost by deposition. [17] The dew point is associated with relative humidity. A high relative humidity indicates that the dew point is closer to the ...

  9. Humidex - Wikipedia

    en.wikipedia.org/wiki/Humidex

    When the temperature is 30 °C (86 °F) and the dew point is 15 °C (59 °F), the humidex is 34. If the temperature remains 30 °C (86 °F) and the dew point rises to 25 °C (77 °F), the humidex rises to 42. The humidex is higher than the U.S. heat index at equal temperature and relative humidity. The humidex formula is as follows: [7] [8]