Toronto Weather Forecast, maximal polite

TodayokFlurries. Wind west 30 km/h gusting to 50. Temperature falling to minus 2 this afternoon. Wind chill minus 9 this afternoon.
Tonightbad-7Partly cloudy. 40% chance of flurries this evening. Wind west 20 km/h gusting to 40 becoming light this evening. Wind chill near minus 10.
Mondayok0A mix of sun and cloud. Wind up to 15 km/h. UV index 1 or low. Wind chill minus 10 in the morning.
Monday nightok-4Cloudy with 30% chance of snow.
Tuesday nightbad-7Cloudy with 40% chance of flurries.
Wednesdaybad-6A mix of sun and cloud with 30% chance of flurries.
Wednesday nightterrible-12Cloudy periods.
Thursdayok-4A mix of sun and cloud.
Thursday nightbad-7Cloudy periods.
Fridayok-1A mix of sun and cloud.
Friday nightok-4Cloudy periods.
Saturdaygood1A mix of sun and cloud.
As of Sun Dec 15 06:45:01 2019

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How does hogdex come up with the ratings?