So … this is an odd thing to find here.
As a migraineur, I always want to keep track of the barometric pressure. I want to see a graph so I know how quickly it’s falling or rising. This is a strangely difficult thing to come by, despite the truly amazing array of weather tools available online.
Thus, it is here. You can use it if you like; just type in your own location. There’s a lot more than just the barometric pressure available under a “More” button. If you want the widget for yourself, click on the WolframAlpha link above.