Would like useful barometric pressure

I enjoy the weather app on our iMac. However, the barometric pressure is only in whole numbers. The change in acutal pressure over the last several days (between snow and freezing rain to birght and sunny) has gone from 30.1 to 30.7. However, the app continues to show simply “30”. Otherwise we really like it.

ShortshiftMX5 about Weather Live Free