// Station · 35m ago

KCPS

St Louis Downtown Airport

CAT VFR

WIND CALM

VIS 10+ SM

CEILING CLR

T/Td 23.3°C / 14.4°C

ALTIM 29.88 inHg

ELEV 413 FT

38.5707°N / 90.1562°W

LOCATION · Cahokia/St Louis, US

WIND

000°0 kt

KCPS · 413 FT

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

METRIC

NOW · 05Z

+6H

+12H

+18H

WIND

CALM

VIS

10+ SM

CEILING

CLR

LAYERS

—

T / Td

23 / 14

ALTIM

29.88"

// 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 KCPS 130553Z AUTO 00000KT 10SM CLR 23/14 A2988 RMK AO2 SLP113 T02330144 10283 20233 403390133 51004 $

KCPS · day 13 at 05:53 UTC · winds calm · visibility 10+ SM · temp 23°C / dewpoint 14°C · altimeter 29.88" Hg · automated station w/ precipitation discriminator · sea-level pressure 1011.3 mb

// Runway analysis · computed from current METAR wind

Wind CALM

ALL USABLE · WINDS CALM

WIND

000°calm

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 6 ends

12R HDG 120° —CALM —— 7,002'

30L HDG 300° —CALM —— 7,002'

12L HDG 120° —CALM —— 5,301'

30R HDG 300° —CALM —— 5,301'

05 HDG 050° —CALM —— 2,799'

23 HDG 230° —CALM —— 2,799'

Pattern altitude: 1,413 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

1,600FT

+1,187 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV413 FT OAT+23°C ISA DELTA+9°C PRESSURE ALT452 FT

// Performance equivalent Operating here right now feels like operating at KSCX (Scott Municipal Airport, Oneida, elev 1,545 ft) on a standard ISA day.

// Aircraft performance impact MODERATE

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+16%

-11%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+11%

-7%

Light jetCJ4, Phenom 300, M2

+6%

-5%

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

// Reported layers (highest → lowest)

CLR

No reported cloud layers — clear sky from surface to reporting ceiling.

// Computed

CEILING— HIGHEST LAYER— TOTAL COVERAGEclear FREEZING LEVEL12,181 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC-6)

12:08ZSUNRISE

17:48ZSOLAR NOON

23:27ZSUNSET

23:53ZCIVIL END

CURRENT06:28Z DAYLIGHT REMAINING16h 58m VFR NIGHT BEGINS23:53Z (17h 25m) DAY LENGTH11h 18m

Waxing Crescent

ILLUMINATION4% MOONRISE13:40Z MOONSET00:59Z FULL MOON IN13 days

// Nearest reporting stations

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

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