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// Station · 24m ago

KOQN

Brandywine Regional Airport
CAT VFR
WIND CALM
VIS 10+ SM
CEILING CLR
T/Td 23°C / 17°C
ALTIM 30.08 inHg
ELEV 466 FT
39.9901°N / 75.5819°W
LOCATION · West Chester, US
N
WIND
000°0 kt
KOQN · 466 FT
© OSM · CartoDB

// Current + 24h forecast · METAR loaded · TAF loading…

METRIC
NOW · 00Z
+6H
+12H
+18H
WIND
CALM
 
 
 
VIS
10+ SM
 
 
 
CEILING
CLR
 
 
 
LAYERS
 
 
 
T / Td
23 / 17
 
 
 
ALTIM
30.08"
 
 
 

// Interpretation

VFR with winds calm. Visibility better than 10 statute miles and no reported cloud layers. Would shift to MVFR if the ceiling drops to 3,000 ft or visibility below 5 SM.

Loading TAF forecast narrative…

SOURCES · NOAA Aviation Weather Center METAR (TAF loading…)

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// Raw observation METAR string + decoded

METAR KOQN 290055Z AUTO 00000KT 10SM CLR 23/17 A3008 RMK AO2

KOQN · day 29 at 00:55 UTC · winds calm · visibility 10+ SM · temp 23°C / dewpoint 17°C · altimeter 30.08" Hg · automated station w/ precipitation discriminator

// Runway analysis · computed from current METAR wind

Wind CALM
ALL USABLE · WINDS CALM
N
WIND
000°calm
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS 2 ends
09 HDG 090° CALM 3,347'
27 HDG 270° CALM 3,347'
Pattern altitude: 1,466 ft MSL (1,000 ft AGL). Verify pattern direction and altitude with the chart supplement before flying. // On calm winds (<3 kt), all runways are usable — favor the longest or whatever the pattern calls for.

// Density altitude · ISA +9°C

1,300FT
+834 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↗ +100 FT
2,200 1,500 800
24h AGO18h12h6hNOW
FIELD ELEV466 FT OAT+23°C ISA DELTA+9°C PRESSURE ALT304 FT
// Performance equivalent Operating here right now feels like operating at KVVS (Joseph A. Hardy Connellsville Airport, Connellsville, elev 1,267 ft) on a standard ISA day.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+13%
-9%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+9%
-6%
Light jetCJ4, Phenom 300, M2
+5%
-4%

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 · clear · no layers reported

FT 0 5k 10k 15k 20k 25k FRZ LVL · 12,082 FT KOQN ELEV · 466 FT
// Reported layers (highest → lowest)
CLR
No reported cloud layers — clear sky from surface to reporting ceiling.
// Computed
CEILING HIGHEST LAYER TOTAL COVERAGEclear FREEZING LEVEL12,082 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC-5)

10:27ZSUNRISE
17:05ZSOLAR NOON
23:42ZSUNSET
00:10ZCIVIL END
CURRENT01:19Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS00:10Z (past) DAY LENGTH13h 14m
Waning Gibbous
ILLUMINATION99% MOONRISE23:14Z MOONSET12:29Z FULL MOON IN29 days

// Nearest reporting stations

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// Area map · 60 NM radius · CartoDB Dark Matter + aeronautical overlay

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