// Station · 10m ago
KM21
Muhlenberg County Airport
CAT VFR
WIND 110° / 5 kt
VIS 10+ SM
CEILING CLR
T/Td 29.2°C / 20.4°C
ALTIM 29.92 inHg
ELEV 422 FT
37.2260°N / 87.1570°W
LOCATION · Greenville, US
WIND
110°5 kt
KM21 · 422 FT
© OSM · CartoDB
// Current + 24h forecast · METAR loaded · TAF loading…
METRIC
NOW · 20Z
+6H
+12H
+18H
WIND
110°/5
VIS
10+ SM
CEILING
CLR
LAYERS
—
T / Td
29 / 20
ALTIM
29.92"
// Interpretation
VFR with light winds at 110°/5 kt. 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…
// Want this glance-able on 10 airports? METAR Deck →// Raw observation METAR string + decoded
METAR KM21 302055Z AUTO 11005KT 10SM CLR 29/20 A2992 RMK AO2 T02920204
KM21 · day 30 at 20:55 UTC · wind from 110° at 5 kt · visibility 10+ SM · temp 29°C / dewpoint 20°C · altimeter 29.92" Hg · automated station w/ precipitation discriminator
// Runway analysis · computed from current METAR wind
Wind 110° @ 5 kt
1 USABLE · 1 AVOID
WIND
110°5 kt
HEADWIND
CAUTION · HIGH XW
AVOID · TAILWIND
HEADWIND ENDS
1 usable
05★
HDG 050°
H3 kt
X4 kt RIGHT
PRIMARY · 5,000'
TAILWIND ENDS · AVOID
1 ends
23
HDG 230°
T2 kt
X4 kt LEFT
—
Pattern altitude: 1,422 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 +15°C
2,200FT
+1,778 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS
↗ +300 FT
24h AGO18h12h6hNOW
FIELD ELEV422 FT
OAT+29°C
ISA DELTA+15°C
PRESSURE ALT419 FT
// Performance equivalent
Operating here right now feels like operating at KAVL
(Asheville Regional Airport, Asheville, elev 2,165 ft)
on a standard ISA day.
// Aircraft performance impact
MINOR
TAKEOFF ROLL
CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+22%
-15%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+15%
-10%
Light jetCJ4, Phenom 300, M2
+9%
-7%
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.
// Cloud layers · clear · no layers reported
// Sun & Moon · times in Z · bar = local day (UTC-6)
10:32ZSUNRISE
17:47ZSOLAR NOON
01:03ZSUNSET
01:33ZCIVIL END
CURRENT21:05Z
DAYLIGHT REMAINING3h 58m
VFR NIGHT BEGINS01:33Z (4h 28m)
DAY LENGTH14h 30m
Full Moon
ILLUMINATION100%
MOONRISE22:02Z
MOONSET12:32Z
FULL MOON IN1 day
// Nearest reporting stations · 5 shown · 60 NM radius
K2I0
VFR
Madisonville Regional Airport · Madisonville
- WIND
- 070° / 9 kt
- VIS
- 10+ SM
- CEILING
- SCT045
- DIST
- 14 NM NW
- AGE
- 10m ago
KHVC
VFR
Hopkinsville Christian County Airport · Hopkinsville
- WIND
- 060° / 9 kt
- VIS
- 10+ SM
- CEILING
- CLR
- DIST
- 26 NM SW
- AGE
- 10m ago
KOWB
VFR
Owensboro Daviess County Airport · Owensboro
- WIND
- 100° / 4 kt
- VIS
- 10+ SM
- CEILING
- CLR
- DIST
- 31 NM N
- AGE
- 9m ago
KHOP
VFR
→
MVFR
08Z
Campbell Army Airfield (Fort Campbell) · Fort Campbell
- WIND
- 100° / 12 kt
- VIS
- 10+ SM
- CEILING
- FEW042
- DIST
- 37 NM SW
- AGE
- 2m ago
KCKV
MVFR
→
VFR
13Z
Clarksville–Montgomery County Regional Airport · Clarksville
- WIND
- 010° / 7 kt
- VIS
- 4.0 SM
- CEILING
- BKN060
- DIST
- 38 NM S
- AGE
- 13m ago
// Area map · 60 NM radius · CartoDB Dark Matter + aeronautical overlay
© OpenStreetMap · CartoDB · OpenAIP
//
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