CYYW pressure (QNH) trend
Armstrong Airport
The altimeter setting over time. Sharp falls mark approaching systems; the range tells you what to expect on a transition altitude.
Lowest QNH
999 hPa
Sep 15, 2026
Highest QNH
1034 hPa
Sep 23, 2026
Mean QNH
1019 hPa
924 archived observations · Archive updated continuously
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