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  2. Humidex - Wikipedia

    en.wikipedia.org/wiki/Humidex

    The humidity adjustment approximately amounts to one Fahrenheit degree for every millibar by which the partial pressure of water in the atmosphere exceeds 10 millibars (10 hPa). At the time the humidex was originally developed in 1965, Canada was still on the Fahrenheit scale , and thus the humidex was originally based on that.

  3. Humidity - Wikipedia

    en.wikipedia.org/wiki/Humidity

    For example, according to the heat index, a relative humidity of 75% at air temperature of 80.0 °F (26.7 °C) would feel like 83.6 ± 1.3 °F (28.7 ± 0.7 °C). [13] [14] Relative humidity is also a key metric used to evaluate when it is appropriate to install flooring over a concrete slab. [clarification needed]

  4. Geography of Ottawa - Wikipedia

    en.wikipedia.org/wiki/Geography_of_Ottawa

    This is the outline of the geography of the city of Ottawa, the capital of Canada. Ottawa's current borders were formed in 2001, when the former city of Ottawa amalgamated with the ten other municipalities within the former Regional Municipality of Ottawa–Carleton. Ottawa is now a single-tiered census division, home to 1,017,449 people. [1]

  5. List of weather records - Wikipedia

    en.wikipedia.org/wiki/List_of_weather_records

    Highest temperature with 100% relative humidity: A temperature of 34 °C ... 207 confirmed tornadoes occurred in a span of 24 hours on April 27, 2011, ...

  6. Dew point - Wikipedia

    en.wikipedia.org/wiki/Dew_point

    The US Occupational Safety and Health Administration recommends indoor air be maintained at 20–24.5 °C (68–76 °F) with a 20–60% relative humidity, [12] equivalent to a dew point of approximately 4.0 to 16.5 °C (39 to 62 °F) (by Simple Rule calculation below).

  7. List of most-viewed YouTube videos - Wikipedia

    en.wikipedia.org/wiki/List_of_most-viewed...

    Progression of the most-viewed video on YouTube Video name Uploader Views at achievement* Publication date Date achieved Days after upload Days held Takedown date Ref Notes "Baby Shark Dance" [7] Pinkfong Baby Shark - Kids' Songs & Stories: 7,046,700,000: June 17, 2016: November 2, 2020 1600 1,551 "Despacito" [10] Luis Fonsi: 2,993,700,000 ...

  8. Heat index - Wikipedia

    en.wikipedia.org/wiki/Heat_index

    The heat index (HI) is an index that combines air temperature and relative humidity, in shaded areas, to posit a human-perceived equivalent temperature, as how hot it would feel if the humidity were some other value in the shade. For example, when the temperature is 32 °C (90 °F) with 70% relative humidity, the heat index is 41 °C (106 °F ...

  9. Water activity - Wikipedia

    en.wikipedia.org/wiki/Water_activity

    When the two tendencies are in balance— and the air and food are stable—the air's relative humidity (expressed as a fraction instead of as a percentage) is taken to be the water activity, a w. Thus, water activity is the thermodynamic activity of water as solvent and the relative humidity of the surrounding air at equilibrium.