[/] search [ENTER] submit ICAO [ESC] clear 5,740 STATIONS · WORLDWIDE

// Station · 21m ago

KGAI

Montgomery County Airpark
CAT VFR
WIND CALM
VIS 10+ SM
CEILING CLR
T/Td 22.2°C / 21.7°C
ALTIM 30.10 inHg
ELEV 539 FT
39.1683°N / 77.1660°W
LOCATION · Gaithersburg, US
N
WIND
000°0 kt
KGAI · 539 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
22 / 22
 
 
 
ALTIM
30.10"
 
 
 

// 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…)

// Want this glance-able on 10 airports? METAR Deck →

// Raw observation METAR string + decoded

METAR KGAI 290056Z AUTO 00000KT 10SM CLR 22/22 A3010 RMK AO2 SLP202 T02220217

KGAI · day 29 at 00:56 UTC · winds calm · visibility 10+ SM · temp 22°C / dewpoint 22°C · altimeter 30.10" Hg · automated station w/ precipitation discriminator · sea-level pressure 1020.2 mb

// 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
14 HDG 140° CALM 4,202'
32 HDG 320° CALM 4,202'
Pattern altitude: 1,539 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 +8°C

1,300FT
+761 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS loading…
FIELD ELEV539 FT OAT+22°C ISA DELTA+8°C PRESSURE ALT356 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 · 11,751 FT KGAI ELEV · 539 FT
// Reported layers (highest → lowest)
CLR
No reported cloud layers — clear sky from surface to reporting ceiling.
// Computed
CEILING HIGHEST LAYER TOTAL COVERAGEclear FREEZING LEVEL11,751 ft VFR MARGINunlimited

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

10:35ZSUNRISE
17:11ZSOLAR NOON
23:47ZSUNSET
00:15ZCIVIL END
CURRENT01:17Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS00:15Z (past) DAY LENGTH13h 12m
Waning Gibbous
ILLUMINATION99% MOONRISE23:22Z MOONSET12:34Z FULL MOON IN29 days

// Nearest reporting stations

Loading nearest reporting stations…

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

© OpenStreetMap · CartoDB · OpenAIP
// Want this on your Stream Deck? METAR Deck shows real-time category and conditions for any 10 airports — built by the team that ships this page.
Get METAR Deck →