1) I see people riding their bicycles
a vehicle composed of two wheels held in a frame one behind the other, propelled by pedals and steered with handlebars attached to the front wheel.
2) I think it's nice outside because of the blue sky.
the region of the atmosphere and outer space seen from the earth.
3) If I was outside I would do some exercise.
activity requiring physical effort, carried out especially to sustain or improve health and fitness.
1) I looked out the window and it's snowy outside.
2) My favourite type of weather is windy. Because it's nice and fresh.
the state of the atmosphere at a place and time as regards heat, dryness, sunshine, wind, rain, etc.