How to follow local air pressure without a weather app

Why the usual way fails

Weather services report pressure from the nearest station, usually adjusted to sea level so different places can be compared, which is why that number rarely matches what a barometer reads where you stand. A single value also tells you little. The useful part is the direction over hours or days, and most apps show the current figure rather than your own history. Many watch weather widgets get their data from the phone, so they stop updating once the phone is out of range. And a sensor that samples all day in the background costs battery on a device you already charge every day or two.

How BaroGuard helps

BaroGuard reads the barometer built into your Wear OS watch and shows live pressure in hPa/mbar, inHg or mmHg, with a label for rising, falling, steady, or still collecting enough data. History stays on the watch for 24 hours, 7 days or 30 days, and you can look at it as a local chart. There is no phone companion, no account and no internet access, so nothing changes when the phone stays at home. One thing to know before you rely on it: readings and history update while the app is open, and the Tile and complications show the last cached value instead of sampling in the background.

Step by step

1. Check that your watch has a built-in barometer, since BaroGuard needs one.
2. Install BaroGuard on the watch and choose the pressure unit you are used to.
3. If you have a trusted reference nearby, calibrate against it or set a quick offset.
4. Open the app at the times you want readings, so the local history has points to compare.
5. Read the trend label and the chart rather than reacting to the single number.
6. Add the Tile or a complication so the last reading is one swipe away between checks.

Tips

• Compare like with like. If you hold BaroGuard up against a weather report, remember the report is often adjusted to sea level, so the two numbers can differ and both be right. Watch how each one changes over a few hours instead of chasing the gap.
• Set an alert for the change you care about. You choose the threshold, the trend window, the direction and a cooldown, so you only hear about a rise or drop of the size you picked. These alerts describe what the watch measured, not what the weather will do.
• Match the history window to the trip. A day of history covers an afternoon on the water, while seven or thirty days lets you compare this week with the last one.
• Take weather readings from the same spot. Walking uphill lowers the pressure your watch sees just as weather does, so if you want a weather trend, check from the tent or the dock each time rather than halfway up the hill.

Questions