Observed arrival · 2026-08-31
Barometric Pressure by US City
A pressure-history and forecasting tool covering 50 US cities, with live charts and a 16-day pressure-change outlook.
Field notes
The comparison uses a defined threshold rather than a general weather impression: a swing day means at least 6 hPa of sea-level pressure change within 24 hours. The visible table also reports standard deviation and the worst 24-hour drop, putting Denver at 281.6 swing days per year and Miami at 19.8. City pages are presented as combining historical records with a live chart and a 16-day outlook, while the homepage says other US locations can be checked beyond the featured 50.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
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