Summary of the past 24 hours from the unofficial station on the roof of the Eyring Science Center on the campus of Brigham Young University in Provo, Utah, USA.

Wed, Jan 20, 2021 10:21:46 AM Wed, Jan 20, 2021 10:20:20 AM¹
Current Values Past 24 hours
 Temperature   0.8 °C   rising 2.57 °C/hour   Maximum:   9.5 °C   at 13:05:20, 1/19/2021 
 Minimum:   -6.7 °C   at 07:45:20, 1/20/2021 
 Average²:   -0.2 °C 
 Relative Humidity   37 %   falling 9.1 %/hour   Maximum:   67.2%   at 07:56:20, 1/20/2021 
 Minimum:   19.8%   at 17:15:20, 1/19/2021 
 Average²:   41.0% 
 Dewpoint   -12.1 °C   falling 0.56 °C/hour   Maximum:   -10.8 °C   at 00:42:20, 1/20/2021 
 Minimum:   -17.1 °C   at 11:34:20, 1/19/2021 
 Average²:   -13.1 °C 
 Mean Sea Level Pressure   101.9 kPa   rising 0.02 kPa/hour   Maximum:   102.1 kPa   at 12:01:20, 1/19/2021 
 Minimum:   101.6 kPa   at 00:35:20, 1/20/2021 
 Average²:   101.8 kPa 
Station Pressure   85.6 kPa   Maximum:   85.8 kPa   at 13:21:20, 1/19/2021 
 Minimum:   85.4 kPa   at 08:30:20, 1/20/2021 
 Average²:   85.5 kPa 
 Wind Speed   0.3 m/s from SSE (165)   Maximum:   6.8 m/s from NW (314°)   at 13:51:20, 1/19/2021 
 Average²:   1.3 m/s 
 Wind Direction   Average³:   from WNW (289°) 
 Solar Irradiance   693 W/m²   rising 217.5 (W/m²)/hour   Maximum:   868 W/m²   at 12:16:20, 1/19/2021 
 Average³:   433 W/m² 
 Rainfall this month   0.8 mm 
 Rainfall since midnight   0.0 mm   Past 24 hours   0.0 mm 
 Maximum rate   0.00 mm/hour   at 10:26:20, 1/19/2021 
 Wind-Chill Temperature   0.8 °C   Maximum:   9.3 °C   at 13:19:20, 1/19/2021 
 Minimum:   -8.9 °C   at 05:24:20, 1/20/2021 
 Average²:   -0.9 °C 
 Heat Index   0.8 °C   Maximum:   9.7 °C   at 13:05:20, 1/19/2021 
 Minimum:   -6.6 °C   at 07:45:20, 1/20/2021 
 Average²:   -0.0 °C 

Click here for metric units.

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¹ The time for the Past 24-hours values is the time those values were last updated. It is usually before the current time because the history values are only updated every few minutes.
² The average given here is the arithmetic mean: Σxi/N where the sum is performed over the available data for the previous 24-hour period. Normally the available data is the 1-minute average (arithmetic mean of data taken once per second) for temperature, humidity, mean sea-level pressure, station pressure, solar insolation, and dewpoint. For wind chill the 1-minute value is the minimum recorded over that period. For wind speed and heat index it is the maximum during the period.
³ The average wind direction is the vector average which incorporates both the direction and speed. It is the net direction a parcel of air would have moved if you could track it over the 24-hour period.