Barometers read atmospheric pressure.
Pressure changes rapidly or slowly up & down.
This can indicate what kind of weather approaches.
Here is a guide to interpreting that change.
Click "here" for the current 24hr trend.
Currently the barometer is ... rising slowly.
Expect a general improvement soon.
Winds may rise.
Expect a general improvement in the coming hours.
Expect similar. Conditions may improve.
The weather will remain similar.
Expect similar. Conditions may get worse.
Expect generally worse weather in the coming hours.
Expect worse weather soon.
A storm may be approaching.