WxDecoder

KARB/ARB METAR Ann Arbor Municipal Airport

Ann Arbor, MichiganElevation 839 ftSmall airport
CURRENT STATUS
UNKNOWN7 min old
No ceiling.
FLIGHT CATEGORY
UNKNOWN
ceiling & visibility
WIND
Calm
no steady wind
CEILING
None
no BKN/OVC layer
ACTIVE NWS ALERTS

Active weather alerts

Dense Fog AdvisoryModerate · Expected · Likely
25 0703Z to 25 1400Z
Sanilac; Shiawassee; Genesee; Lapeer; St. Clair; Livingston; Oakland; Macomb; Washtenaw; Wayne; Lenawee; Monroe
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...A portion of southeast Michigan. * WHEN...Until 10 AM EDT this morning. * IMPACTS...Low visibility makes driving conditions hazardous. * ADDITIONAL DETAILS...Fog expands northward and eastward from the Ohio border, I-94, and I-96 corridors across metro Detroit and toward I-69 and the Lake Huron shoreline during the morning.
If driving, slow down, use low beam headlights, and leave plenty of distance between vehicles.

Alerts from the National Weather Service. For situational awareness only; always confirm against an official briefing.

CURRENT METAR

Decoded observation

Observed 0853Z (4:53 AM local) · 7 min old

KARB is currently UNKNOWN. Wind information is unavailable. Visibility was not reported. No cloud information was reported.

ALTIMETER
30.45 inHg
1031.2 hPa, above standard.
WEATHER & HAZARDS
No significant hazards
No precipitation or obscuration reported.

Codes in this report: AUTO 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)
SLPNO
sea-level pressure not available
57003
3-hour pressure tendency: falling steadily (0.3 hPa change)
PWINO
present-weather sensor not operating
FZRANO
freezing-rain sensor not operating
FAA: no delays reported at ARB.

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

SUGGESTED RISK · TRAINING USE

Suggested risk level: Moderate

›Flight category could not be determined.
›No TAF available for this airport.

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 UNKNOWN, ceiling none. Forecast suggests sunday areas of fog then partly sunny, high near 68F, low near 43F, 2% chance of precipitation. Key risks: no significant hazards are highlighted right now, but always confirm against an official briefing.

DayConditionsTemp FWindGustsPrecipPilot note
Sunday Areas Of Fog then Partly Sunny 68/43 SSW 6 kt – 2%
Monday Patchy Fog then Partly Sunny 68/42 NW 6 kt – 2%
Tuesday Partly Sunny 62/44 E 7 kt – 0%
Wednesday Partly Sunny 70/51 SSE 7 kt – 4%
Thursday Slight Chance Light Rain 72/48 WSW 10 kt – 22%
Friday Mostly Sunny 71/50 SSE 7 kt – 5%
Saturday Partly Sunny then Slight Chance Light Rain 70 S 8 kt – 16%

Source: National Weather Service (office DTX). Forecast issued 0859Z.

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
2 runways · crosswind ranking
NESW12300624CALMCALMCALMCALMCALM
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

2 runways · longest 3,505 ft

12/30
Dimensions
2,750 x 110 ft
Surface
Turf (fair)
RWY 12122°T
Traffic patternLeft
RWY 30302°T
Traffic patternLeft
06/24
Dimensions
3,505 x 75 ft
Surface
Concrete (fair)
Edge lights
MED
RWY 0655°T
REILYes
VGSIPAPI (P4L)
Traffic patternLeft
RWY 24235°T
VGSIVASI (V2L)
Traffic patternLeft

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

FIELD CONDITIONS

Field elevation

Field elevation
839 ft MSL

Density and pressure altitude need a current temperature and altimeter from the METAR.

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
2239Z 6:39 PM
Sunrise
1159Z 7:59 AM
Loggable night
2308Z (7:08 PM local) → 1130Z (7:30 AM local)
end of evening to start of morning civil twilight
Position lights required
2239Z (6:39 PM local) → 1159Z (7:59 AM local)
sunset to sunrise (91.209)
Night passenger currency
2339Z (7:39 PM local) → 1059Z (6:59 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

Ann Arbor Municipal Airport is in Ann Arbor, Michigan. Field elevation 839 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPublicly owned
UseOpen to the public
TypeSmall airport
ManagerCARL KONOPASKA
Manager phone734-794-6312
AttendedAPR-OCT ALL, 0800–2000
CHARTS & AIRSPACE
ICAO / IATAKARB / ARB
SectionalDETROIT
Center (ARTCC)CLEVELAND
Flight service (AFSS)LANSING
RegionMichigan
CountryUnited States
Coordinates42.2230, -83.7456
Distance from city3 NM S
SERVICES & LIGHTING
FuelJet A+
Control towerTowered
Field lightingSee remarks
BeaconSunset to sunrise · White-green (lighted land airport)
CTAF120.300
UNICOM123.000
FREQUENCIES

Communications

118.95
DETROIT APP/DEP
A/D
134.55
ASOS
ASOS
134.55
ATIS
ATIS
120.3
CTAF
CTAF
121.6
GND/CLNC DEL
GCCD
120.3
TWR
TWR
123
UNICOM
UNIC
123.000
UNICOM
UNICOM

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

AIRCRAFT ACTIVITY

KARB traffic patterns

2026-06-12 to 2026-10-23, 70 days observed · data 2026-10-23

High confidence
TRAFFIC VOLUME (30-DAY)
AVG LANDINGS/DAY
71.6
AVG OPS/DAY
90.6
Activity trend over 18 days: rising, from 95 to 100 operations per dayOperations trend (18 days)

Busiest day: Sat · Busiest month: Sep

FLEET MIX
Piston single 69%Unknown 20%Helicopter 5%Turboprop 3%Twin 2%Jet 1%

Mostly small piston aircraft.

TOP AIRCRAFT TYPES
›C172 (Piston single) · ~268 landings/mo
›C152 (Piston single) · ~211 landings/mo
›P28A (Piston single) · ~87 landings/mo
›UNKN (Unknown) · ~50 landings/mo
›R44 (Helicopter) · ~31 landings/mo
LIKELY BASED AIRCRAFT
Low-confidence estimate

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

›C172 (Piston single)
›C152 (Piston single)
›P28A (Piston single)
›UNKN (Unknown)
›CRUZ (Unknown)

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.

KYIP Willow Run Airport
10 NM E
LIFR
KDTW Detroit Metropolitan Wayne County Airport
17 NM E
LIFR
KADG Lenawee County Airport
26 NM SW
LIFR
KPTK Oakland County International Airport
30 NM NE
LIFR
KJXN Jackson County Airport/Reynolds Field
32 NM W
MVFR
CYQG Windsor International Airport
35 NM E
LIFR
AIRPORT REMARKS

Operational remarks

›TRML OPEN 0700-DUSK.
›WHEN ATCT CLSD CONFIRM SNOW REMOVAL OPNS & WINTER CONDS - CTAF.
›FOR CD WHEN ATCT IS CLSD CTC DETROIT APCH AT 734-955-1404.
›DEER & LRG BIRDS ON & INVOF ARPT.
›3 FT YELLOW CONES.
›NO SNOW REMOVAL FOR RWY 12/30.
›WHEN ATCT CLSD ACTVT REIL RWY 06; PAPI RWY 06; VASI RWY 24; MIRL RWY 06/24 - CTAF.
›RWY 24 RUNUP AREA FIRST 200 FT OF TWY A; TWY A1 BTN TWY A & RWY 24 HOLD LINE NOT VSB FM TWR.
OFFICIAL LINKS & SOURCES
↗Official METAR on AviationWeather.gov
↗Search NOTAMs (official FAA NOTAM Search)
↗Wikipedia
↗KARB on OurAirports
FREQUENTLY ASKED
Does KARB have a METAR?
Yes. KARB has a current METAR observation, decoded into plain English on this page.
Does KARB have a TAF?
When KARB issues a TAF, its decoded forecast timeline loads live on this page; otherwise use the nearest TAF-issuing field as a planning reference.
What is the field elevation at KARB?
KARB sits at 839 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for KARB?
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.