RJSA — Aomori Airport

fog forecast & climatology · Aomori city page · full 10-year analysis →
No fog forecast feed exists for this station. September typically brings about 6 hours of dense fog here (10-year average).

Fog hours per year
329 h below CAT I minima (2016–2026 average)
Fog season
July and January
Typical fog event
~1 h once it forms (middle half 1–2 h, n=1168)
Data through
2026-08-15 · machine-readable data.json

When this airport fogs in

In a typical year Aomori Airport spends 329 hours below CAT I approach minima (visibility under ~½ mile or ceiling under 200 ft), concentrated in July and January. The strip above shows the hour-by-hour pattern for the current month from ten years of weather observations.

Fog season

January: ~82 hJanFebruary: ~40 hFebMarch: ~36 hMarApril: ~44 hAprMay: ~41 hMayJune: ~68 hJunJuly: ~90 hJulAugust: ~54 hAugSeptember: ~6 hSepOctober: ~9 hOctNovember: ~14 hNovDecember: ~43 hDec
Fog season runs December through August, peaking in July; fog is mostly a 10 PM–6 AM phenomenon; typically thinning out by 9 AM; a typical event lasts about 1 hour once it forms local time · 10-yr average

For flight operations

EFVS crews: the CHASE board ranks airports by live fog status, approach lighting, go-around height and flight time from your base. Forecast probabilities publish here per-airport once the calibrated model beats climatology on live verification — receipts on the scorecard. Methodology.

Sources: NOAA/NWS National Blend of Models guidance · METAR observations 2016–2026 (Iowa Environmental Mesonet) · FAA NASR. Machine access: data.json · llms.txt. Not for operational use.