Your phone tracks air pressure—and that tiny detail can warn you about weather changes early.

Herb, from Aledo, writes to ask about the barometer reading and if, when we report a reading in the Quad-Cities, it will be the same for Aledo or any other area town. Pressure does vary with distance ...

I've had a couple of recent e-mails asking about barometer readings, what they measure and what those readings mean. What a barometer measures is the weight of the air above it. The standard ...