K9Y1 pressure (QNH) trend
Weydahl Field
The altimeter setting over time. Sharp falls mark approaching systems; the range tells you what to expect on a transition altitude.
Lowest QNH
1002 hPa
Sep 14, 2026
Highest QNH
1027 hPa
Sep 17, 2026
Mean QNH
1017 hPa
1,245 archived observations · Archive updated continuously
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