KBMI pressure (QNH) trend
Central Illinois Regional Airport at Bloomington-Normal
The altimeter setting over time. Sharp falls mark approaching systems; the range tells you what to expect on a transition altitude.
Lowest QNH
1012 hPa
Sep 20, 2026
Highest QNH
1028 hPa
Sep 24, 2026
Mean QNH
1020 hPa
650 archived observations · Archive updated continuously
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