Question

The condition of the air outdoors at a certain time of a day is known as what ?

Answer 1

The condition of the air outdoors at a certain time of a day is known as the weather.
The weather refers to what the atmosphere is like at a particular place and particular time. It can be hot, cold, cloudy, rainy, dry, windy, etc. All of these conditions can affect the weather and the way it will "behave" each day outside.