WxDecoder

KDEC/DEC METAR & TAF Decatur Airport

Decatur, IllinoisElevation 682 ftMedium airport
CURRENT STATUS
VFR50 min old
No ceiling, visibility 10 SM.
FLIGHT CATEGORY
VFR
ceiling & visibility
WIND
Calm
no steady wind
VISIBILITY
10 SM
16.1 km
CEILING
None
no BKN/OVC layer
DENSITY ALT
175 ft
-507 ft vs field
CURRENT METAR

Decoded observation

Observed 0054Z (7:54 PM local) · 50 min old

KDEC is currently VFR. Winds are calm. Visibility is 10 statute miles. There is no ceiling.

WIND
Calm
No steady wind.
VISIBILITY
10 statute miles
16.1 km, good.
CEILING & SKY
CLR
FEW and SCT layers are not ceilings.
TEMP / DEWPOINT
13°C / 8°C
55°F / 46°F. 5°C spread.
ALTIMETER
30.35 inHg
1027.8 hPa, above standard.
WEATHER & HAZARDS
No significant hazards
No precipitation or obscuration reported.

Codes in this report: CLR RMK AO2

Hover or tap any group for a plain-English explanation.

REMARKS: DECODED
AO2
automated station with a precipitation discriminator (can tell rain from snow)
SLP280
sea-level pressure 1028.0 hPa
T01330083
precise temperature 13.3°C, dew point 8.3°C
TERMINAL AERODROME FORECAST

TAF timeline

Issued 2320Z (6:20 PM local) · valid to 0000Z (7:00 PM local)

KDEC forecast starts VFR at 00Z. Conditions are roughly steady over the period.

BKN25025,000 ft
0000Z7:00 PM0448Z11:48 PM0936Z4:36 AM1424Z9:24 AM1912Z2:12 PM0000Z7:00 PM

Codes in this report: P6SM BKN

Tap any group to decode it.

FAA: no delays reported at DEC.

Source: FAA System Operations (ASWS). Operational status only; verify with official FAA sources and NOTAMs.

SUGGESTED RISK · TRAINING USE

Suggested risk level: Low

›No significant weather concerns in the current report.

A suggested risk level for training and situational awareness only, not a go/no-go authority. Verify with official sources and apply your personal minimums.

FORECAST & PILOT NOTES · SUPPLEMENTAL

Extended forecast and pilot notes

Current aviation conditions show flight category VFR, wind calm, visibility 10 SM, ceiling none. Forecast suggests tonight mostly cloudy, low near 50F, 1% chance of precipitation. Key risks: no significant hazards are highlighted right now, but always confirm against an official briefing.

DayConditionsTemp FWindGustsPrecipPilot note
Tonight Mostly Cloudy 50 S 4 kt – 1%
Monday Partly Sunny 77/49 S 3 kt – 3%
Tuesday Partly Sunny 74/51 S 8 kt – 3%
Wednesday Mostly Sunny 77/54 S 10 kt – 3%
Thursday Sunny 81/54 SSW 10 kt – 7%
Friday Mostly Sunny 80/57 S 8 kt – 11%
Saturday Chance Rain Showers 74/57 S 9 kt – 63%
Sunday Chance Rain Showers 73 SW 9 kt – 45%

Source: National Weather Service (office ILX). Forecast issued 0144Z.

Radar

Radar data: NOAA/NWS MRMS composite reflectivity. For situational awareness only, not a substitute for an official weather briefing.

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RUNWAYS & WIND
3 runways · crosswind ranking
NESW062412301836CALMCALMCALMCALMCALM
WIND USED
Wind calm or variable
Crosswind ranking is unavailable until the wind has a steady direction.
Components are estimates from the current METAR wind and runway heading. Verify with the Chart Supplement and NOTAMs.
RUNWAYS

Runway detail & declared distances

3 runways · longest 8,496 ft

06/24
Dimensions
8,496 x 150 ft
Surface
Asphalt
Edge lights
HIGH
RWY 0659°T
Landing length (LDA)8,496 ft
TORA / TODA / ASDA8,496 / 8,496 / 8,496 ft
ILSILS/DME
Approach lightsMALSR
Traffic patternLeft
RWY 24239°T
Landing length (LDA)8,496 ft
TORA / TODA / ASDA8,496 / 8,496 / 8,496 ft
VGSIVASI (V4L)
Traffic patternLeft
12/30
Dimensions
6,799 x 150 ft
Surface
Asphalt
Edge lights
MED
RWY 12119°T
Landing length (LDA)6,799 ft
TORA / TODA / ASDA6,799 / 6,799 / 6,799 ft
Traffic patternLeft
RWY 30299°T
Landing length (LDA)6,799 ft
TORA / TODA / ASDA6,799 / 6,799 / 6,799 ft
VGSIPAPI (P4L)
Traffic patternLeft
18/36
Dimensions
5,298 x 150 ft
Surface
Asphalt (good)
Edge lights
MED
RWY 18179°T
Landing length (LDA)5,298 ft
TORA / TODA / ASDA5,298 / 5,298 / 5,298 ft
VGSIPAPI (P4L)
Traffic patternLeft
RWY 36359°T
Landing length (LDA)5,298 ft
TORA / TODA / ASDA5,298 / 5,298 / 5,298 ft
VGSIVASI (V4L)
Traffic patternLeft

Runway data from the FAA NASR dataset (effective 2026-06-11). Verify with the current Chart Supplement and NOTAMs.

FIELD CONDITIONS

Performance & density altitude

Density altitude
175 ft
Pressure altitude
252 ft
Field elevation
682 ft MSL
Temperature
13°C (55°F)
Dewpoint
8°C (46°F)
Altimeter
30.35 inHg

Density altitude estimates how the aircraft performs versus standard atmosphere. Higher density altitude reduces climb performance and increases takeoff distance.

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
2302Z 6:02 PM
Sunrise
1217Z 7:17 AM
Loggable night
2329Z (6:29 PM local) → 1149Z (6:49 AM local)
end of evening to start of morning civil twilight
Position lights required
2302Z (6:02 PM local) → 1217Z (7:17 AM local)
sunset to sunrise (91.209)
Night passenger currency
0002Z (7:02 PM local) → 1117Z (6:17 AM local)
1 hr after sunset to 1 hr before sunrise (61.57(b))

FAA definitions, shown in Zulu with airport-local time. Verify for your operation.

AIRPORT INFORMATION

Facility & services

Decatur Airport is in Decatur, Illinois. Field elevation 682 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPublicly owned
UseOpen to the public
TypeMedium airport
Airline serviceYes
ManagerTIM A. WRIGHT
Manager phone217-428-2423
AttendedALL SAT SUN, 0700–2130
CHARTS & AIRSPACE
ICAO / IATAKDEC / DEC
SectionalST LOUIS
Center (ARTCC)KANSAS CITY
Flight service (AFSS)SAINT LOUIS
RegionIllinois
CountryUnited States
Coordinates39.8346, -88.8657
Distance from city4 NM E
SERVICES & LIGHTING
Fuel100LL · Jet A
Control towerTowered
Field lightingSee remarks
BeaconSunset to sunrise · White-green (lighted land airport)
CTAF118.900
UNICOM122.950
FREQUENCIES

Communications

132.85
CHAMPAIGN APP/DEP
A/D
126.35
ATIS
ATIS
118.9
CTAF
CTAF
121.75
GND
GND
122.3
ST LOUIS RDO
RDO
118.9
TWR
TWR
122.95
UNICOM
UNIC
122.950
UNICOM
UNICOM

Not all tower/ground/approach frequencies are in our datasets. Verify with the FAA Chart Supplement.

AIRCRAFT ACTIVITY

KDEC traffic patterns

2026-06-12 to 2026-10-22, 43 days observed · data 2026-10-23

Medium confidence
TRAFFIC VOLUME (30-DAY)
AVG LANDINGS/DAY
0.9
AVG OPS/DAY
2.3
Activity trend over 11 days: falling, from 3 to 2 operations per dayOperations trend (11 days)

Busiest day: Fri · Busiest month: Jul

FLEET MIX
Piston single 28%Helicopter 23%Turboprop 18%Airliner 12%Jet 12%Unknown 7%

Mostly small piston aircraft.

TOP AIRCRAFT TYPES
›AT3T (Turboprop) · ~6 landings/mo
›B06 (Helicopter) · ~4 landings/mo
›CRJ2 (Airliner) · ~4 landings/mo
›P28A (Piston single) · ~2 landings/mo
›C182 (Piston single) · ~2 landings/mo
LIKELY BASED AIRCRAFT
Low-confidence estimate

Aircraft likely based near this airport (estimate), mostly single-engine piston aircraft.

›P28A (Piston single)
›H60 (Helicopter)
›EC45 (Helicopter)
›AT5T (Turboprop)
›AT3T (Turboprop)

This is an estimate based on repeated flight patterns, not registration data. Do not rely on it to identify specific aircraft or owners.

Data limitations (4)
›ADS-B coverage is incomplete; counts are an observed lower bound, not official totals.
›Some aircraft do not transmit usable ADS-B and are not counted.
›Aircraft types and based estimates are inferred and may be wrong.
›This is not official ATC, FAA, or airport data.
NEARBY AIRPORTS

Weather reference stations

Current flight category at nearby reporting stations.

KCMI University of Illinois Willard Airport
30 NM NE
VFR
KMTO Coles County Memorial Airport
35 NM SE
VFR
KSPI Abraham Lincoln Capital Airport
37 NM W
VFR
KBMI Central Illinois Regional Airport at Bloomington-Normal
39 NM N
VFR
KPIA General Wayne A. Downing Peoria International Airport
63 NM NW
VFR
KIJX Jacksonville Municipal Airport
63 NM W
VFR
AIRPORT REMARKS

Operational remarks

›PCR VALUE: 3280/F/D/X/T
›INDEX B ARFF CAPABILITY RQR 24 HR PPR - CTC AMGR.
›(CONTACT TITLE) 217-428-8836
›(LAHSO_ALD, RWY 24) SECONDARY LAHSO 8000 FT HOLD SHORT OF RWY 18/36.
›FOR CD IF UNA TO CTC ON FSS FREQ, CTC CHICAGO ARTCC 630-906-8921.
›TWY A RSTRD NORTH OF TWY G TO ACFT WITH WINGSPAN OF 86FT OR LESS WITHOUT PPR - CTC AMGR.
›RWY 12 & 18 AND RWY 06 & 36 CLOSELY ALIGNED. VFY CORRECT RWY AND COMPASS HDG PRIOR TO DEP.
›FOR US CUSTOMS CALL 217-425-4803.
›SNOW REMOVAL OPS WINTER MONTHS MNT CTAF. LNDG/DEP ACFT USE CTAF WHEN ATCT CLSD.
›GLIDER OPS RWY 06 & 30 ONLY, RQR WRITTEN APVL - CTC AMGR. SOD OPS NA.
›BIRDS & WILDLIFE ON & INVOF ARPT.
›WHEN ATCT CLSD BE ALERT FOR VEHICULAR TFC IN ARPT OPS AREAS.
›N RAMP FROM HNGR B TO HNGR G CLSD TO ACFT OVR 12500 LBS.
›PCR VALUE: 1200/F/D/X/T
›ACTVT MALSR RWY 06; MIRL RWY 12/30 & 18/36; TWY LGTS RWY 06 - CTAF. WHEN ATCT CLSD HIRL RWY 06/24 PRESET LOW INTST; INCR INTST - CTAF.
›PCR VALUE: 3250/F/D/X/T
OFFICIAL LINKS & SOURCES
↗Official METAR on AviationWeather.gov
↗Search NOTAMs (official FAA NOTAM Search)
↗Wikipedia
↗KDEC on OurAirports
FREQUENTLY ASKED
Does KDEC have a METAR?
Yes. KDEC has a current METAR observation, decoded into plain English on this page.
Does KDEC have a TAF?
Yes, a TAF is issued for KDEC; the decoded forecast timeline is shown above.
What is the field elevation at KDEC?
KDEC sits at 682 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for KDEC?
No. wxdecoder.com is for education and situational awareness only. It is not an official weather briefing or a substitute for official sources, NOTAM review, and pilot judgment.
This app is for aviation weather education, training, and situational awareness only. It is not a substitute for an official weather briefing, approved flight-planning software, flight service, dispatch procedures, current FAA regulations, or pilot judgment. Always verify weather with official sources before flight.