During the day, sunny days; Evening, sunny day; During the day, rainy days; Is the air pressure high or low on rainy nights?

The air pressure on sunny days is higher than that on cloudy days, and it is higher during the day than at night.

The night is sunny.

I wonder if it rains during the day.

Make a simple barometer and see which one is taller.

You just need to write it out and make a simple barometer. The measured liquid level is the highest in sunny days, the lowest in cloudy days at night and the lowest in sunny days at night.

Write down any high point of day and rainy day, and draw the conclusion that day is sunny.

Be on top of.

Is it sunny at night or rainy during the day?

It is higher than that in rainy days or sunny nights (the same as the measured results) and then higher than that.

It is cloudy at night. This should do.