// Station · 19m ago
KBFI
// Current + 24h forecast · METAR loaded · TAF loading…
// Interpretation
VFR with winds calm. Visibility better than 10 statute miles and scattered at 5,000 ft, and scattered at 25,000 ft. Reported weather: smoke (FU). Smoke aloft is most often wildfire smoke drifting into the area — fine particulates that scatter light and cut visibility even though the air itself stays dry, so it behaves differently from moisture-based mist or fog. Would shift to MVFR if the ceiling drops to 3,000 ft or visibility below 5 SM.
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// Want this glance-able on 10 airports? METAR Deck →// Raw observation METAR string + decoded
METAR KBFI 251753Z 10SM FU SCT050 SCT250 24/15 A2996 RMK AO2 SLP145 T02390150 10244 20167 58000
KBFI · day 25 at 17:53 UTC · winds calm · visibility 10+ SM · scattered layer at 5,000 ft · scattered layer at 25,000 ft · temp 24°C / dewpoint 15°C · altimeter 29.96" Hg · weather: smoke (FU) · automated station w/ precipitation discriminator · sea-level pressure 1014.5 mb
// Runway analysis · computed from current METAR wind
// Density altitude · ISA +9°C
Approximate using ~10% perf loss / 1,000 ft DA for normally aspirated, scaled by powerplant type. Verify with your aircraft's POH for accurate numbers — especially above 5,000 ft DA where these rules of thumb diverge. Severity rating assumes a standard altimeter setting (29.92" Hg / 1013 hPa); a non-standard setting shifts the effective altitude by roughly 1,000 ft per 1" Hg of deviation.
// Cloud layers · 2 reported · highest to lowest
// Sun & Moon · times in Z · bar = local day (UTC-8)
// Nearest reporting stations
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