Grosse Ile Municipal Airport (KONZ) Aviation Weather: METAR
As of 8:55 AM EDT, Oct 28, KONZ is currently VFR with calm winds, visibility 10+ statute miles, and no ceiling reported.
Live aviation weather for Grosse Ile Municipal Airport in Detroit/Grosse Ile, MI, including METAR, flight category, wind, visibility, ceiling, altimeter and runway crosswinds.
Grosse Ile Municipal Airport (KONZ) is a general aviation airport serving pilots in and around Detroit/Grosse Ile, MI at a field elevation of 590 ft. KONZ reports its own METAR, decoded live on this page as flight category, wind, visibility, ceiling and altimeter. It has 2 physical runways (04/22, 17/35), the longest 4,846 ft. Automated weather is broadcast on 119.675.
Wind calm, visibility 10+ statute miles, no cloud data, temperature 12°C (54°F), altimeter 30.27 inHg. Conditions are Visual Flight Rules (VFR).
METAR KONZ 281255Z AUTO 00000KT 10SM CLR 12/12 A3027 RMK AO2
What changed at KONZ?
Since the 1235Z (8:35 AM EDT) report, compared automatically against the latest METAR.
No significant changes since the 1235Z (8:35 AM EDT) report, conditions are holding steady.
Current pilot readout for KONZ
KONZ is currently VFR with calm winds, visibility 10+ statute miles, and no ceiling reported. Density altitude is approximately -50 ft (field elevation 590 ft). KONZ does not publish a TAF. The nearest TAF station is KDTW, about 11 nm away.
KONZ by the numbers
What the long-run records say about flying here, computed for this airport alone.
KONZ reported VFR in 78% of daylight observations over 20 years, about 244 flyable days a year. July is the most reliable month and December the least, with IFR or worse 12% of the time. When conditions drop it is usually a mix of low ceilings (under 1,000 ft 5% of hours) and low visibility (under 3 miles 4%).
Over 20 years of hourly winds, runway 22 had the best headwind 33% of the time, runway 35 24%, and winds were calm 13% of hours. Winds most often blow from the south. Crosswind on the best available runway topped 15 kt in under 1% of hours.
Snow fell on about 66 days a year. From December to February KONZ was IFR or worse 13% of the time, against 3% from June to August.
Fog was reported on about 21 days a year, and fog or mist on 116. January and December are the foggiest months, with fog in 9% of hours, against 3% in July.
Gusts showed up in 17% of hours, typically 7 kt above the steady wind, and the strongest credible gust on record was 53 kt. January is the windiest month (mean 8 kt) and August the calmest.
Sources: hourly observations 2006 to 2025 and the per-runway wind climatology 2006 to 2025. Historical summaries, not a forecast: check the current METAR, TAF and a briefing before flight.
New to aviation weather? How to read a METAR → · What VFR/MVFR/IFR mean → · Decode any METAR/TAF → · Density altitude calculator →
Runway wind check
Estimated head/tailwind and crosswind for each runway end from the current reported wind.
Current wind is calm: calm wind is not a factor for runway selection, and with no wind there is no head/tail or crosswind component to compute. Live numbers return automatically once a report includes a wind direction.
| Runway | Length | Surface | Head / Tail | Crosswind |
|---|---|---|---|---|
| 04 | 4,846 ft | CON | - | - |
| 17 | 4,424 ft | CON | - | - |
| 22 | 4,846 ft | CON | - | - |
| 35 | 4,424 ft | CON | - | - |
Open the crosswind calculator to try your own wind and runway numbers →
KONZ runways
2 physical runways · 4 runway ends. Each card opens the runway's intelligence page: equipment and lighting, LAHSO, frequencies, today's configuration, predicted use, history and approaches.
- Restricted (NOTAM)Runway 04/224,846 × 100 ft · CONCurrent useno stated-runway source at KONZWind
- 04
- no steady wind
- 22
- no steady wind
1 active equipment NOTAMView Runway Intelligence → - Status not monitoredRunway 17/354,424 × 75 ft · CONCurrent useno stated-runway source at KONZWind
- 17
- no steady wind
- 35
- no steady wind
no active equipment NOTAM receivedView Runway Intelligence →
“Current use” is what the facilitystates; wind components are arithmetic on the current METAR against TRUE headings; status reflects NOTAMs received through SWIM, the tower's TFDM record and the D-ATIS — a runway reads “Open” only with a complete NOTAM picture.
24-hour trend
Wind, ceiling and flight category over the last 24 hours.
Over the last 24 h: wind 7→0 kt, ceiling unlimited → unlimited.
KONZ weather radar
Live NEXRAD + lightning, with a 4-hour future-radar forecast. Drag to pan, tap ⚡ to toggle lightning.
Radar: NOAA/NWS via IEM · Forecast: NOAA HRRR · Lightning: NOAA · Map © Stadia Maps © OpenMapTiles © OpenStreetMap
NOAA NEXRAD composite and lightning, updated about every five minutes; amber frames are HRRR model guidance, not observed radar. Not for navigation.
Pilot reports (PIREPs) within 100 NM of KONZ
Reported by pilots in flight over the past 6 hours, via aviationweather.gov.
Show raw report
DTW UA /OV 20 SE DTW/TM 1244/FL150/TP E75S/TA M06/IC LGT RIME
DTW UAHeader: reporting station and UA: a routine pilot report.OV 20 SE DTWLocation: fix or navaid, optionally with a radial and distance in NM.TM 1244Reported at 12:44 UTC.FL150Altitude: 15,000 ft MSL.TP E75SAircraft type reporting.TA M06Outside air temperature, °C.IC LGT RIMEIcing: light rime.Show raw report
DTW UA /OV SVM090025/TM 1223/FL170/TP FA20/TA M01/IC LGT RIME 110-170/RM ZOB
DTW UAHeader: reporting station and UA: a routine pilot report.OV SVM090025Location: fix or navaid, optionally with a radial and distance in NM.TM 1223Reported at 12:23 UTC.FL170Altitude: 17,000 ft MSL.TP FA20Aircraft type reporting.TA M01Outside air temperature, °C.IC LGT RIME 110-170Icing: light rime 11,000–17,000 ft.RM ZOBRemarks.Show raw report
DTW UA /OV 10 N DTW/TM 1219/FL160/TP SF50/TA M10/IC LGT CLR/RM DURC
DTW UAHeader: reporting station and UA: a routine pilot report.OV 10 N DTWLocation: fix or navaid, optionally with a radial and distance in NM.TM 1219Reported at 12:19 UTC.FL160Altitude: 16,000 ft MSL.TP SF50Aircraft type reporting.TA M10Outside air temperature, °C.IC LGT CLRIcing: light clear.RM DURCRemarks.Show raw report
DTW UA /OV DXO/TM 1217/FL180/TP SF50/WX M10/TB LGT CLR 155-165/RM ZOB
DTW UAHeader: reporting station and UA: a routine pilot report.OV DXOLocation: fix or navaid, optionally with a radial and distance in NM.TM 1217Reported at 12:17 UTC.FL180Altitude: 18,000 ft MSL.TP SF50Aircraft type reporting.WX M10Weather and flight visibility observed.TB LGT CLR 155-165Turbulence: light clr 15,500–16,500 ft.RM ZOBRemarks.Show raw report
DTW UA /OV DXO/TM 1200/FL170/TP E75L/TA M15/TB LGT CHOP/IC LGT RIME/RM ZOB
DTW UAHeader: reporting station and UA: a routine pilot report.OV DXOLocation: fix or navaid, optionally with a radial and distance in NM.TM 1200Reported at 12:00 UTC.FL170Altitude: 17,000 ft MSL.TP E75LAircraft type reporting.TA M15Outside air temperature, °C.TB LGT CHOPTurbulence: light chop.IC LGT RIMEIcing: light rime.RM ZOBRemarks.Show raw report
DTW UA /OV 15 SE DTW/TM 1154/FL120/TP A321/TA -11/IC LT RIME 165-140
DTW UAHeader: reporting station and UA: a routine pilot report.OV 15 SE DTWLocation: fix or navaid, optionally with a radial and distance in NM.TM 1154Reported at 11:54 UTC.FL120Altitude: 12,000 ft MSL.TP A321Aircraft type reporting.TA -11Outside air temperature, °C.IC LT RIME 165-140Icing: lt rime 16,500–14,000 ft.Show raw report
TTF UA /OV 10S CRL/TM 1149/FL170/TP CL35/TA M14/IC LGT RIME/RM ZOB
TTF UAHeader: reporting station and UA: a routine pilot report.OV 10S CRLLocation: fix or navaid, optionally with a radial and distance in NM.TM 1149Reported at 11:49 UTC.FL170Altitude: 17,000 ft MSL.TP CL35Aircraft type reporting.TA M14Outside air temperature, °C.IC LGT RIMEIcing: light rime.RM ZOBRemarks.Show raw report
MFD UA /OV MFD/TM 1113/FL280/TP B738/TB MOD CHOP/RM ZOB
MFD UAHeader: reporting station and UA: a routine pilot report.OV MFDLocation: fix or navaid, optionally with a radial and distance in NM.TM 1113Reported at 11:13 UTC.FL280Altitude: 28,000 ft MSL.TP B738Aircraft type reporting.TB MOD CHOPTurbulence: moderate chop.RM ZOBRemarks.⚠️ PIREPs are unverified pilot reports. Not for operational use: conditions change between reports.
Recent aviation weather trends at KONZ
From ATIS Alerts' hourly weather history.
Over the past 24 hours, KONZ reported mostly VFR across 72 observations, with 2 flight-category changes. The lowest ceiling was 2,200 ft. Wind most often came from the E.
Most recent change: MVFR → VFR
Most recent change: MVFR → VFR
Share of hours each runway had the most headwind. From wind reports, not ATC assignments.
- 17
- 28%
- 22
- 26%
- 04
- 23%
- 35
- 23%
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Live crosswind meter
Measured by KONZ's own weather station.
Wind is calm or variable. Either end works.
Concrete · 4,846 ft. Headings from FAA runway data. Not for navigation.
Field aerial
North up
Runway 04/22, 17/35 drawn from FAA threshold coordinates.
Imagery: USGS The National Map (public domain). Something off? ✏️ Suggest an edit
Airport info
From the FAA airport record (cycle 2026-10-01) and OurAirports.
Services
- Fuel
- 100LL · Jet A
- Attended
- Mon-Fri 0800-1800 local; Sat-Sun PRIOR ARNGMT local
- Repairs
- Airframe & engine, major
- Transient parking
- Tie-downs · Hangars
- Landing fee
- No
- Other services
- Charter · Flight instruction · Aircraft rental
- Control tower
- None
- Wind indicator
- Lighted
Airport
- Type
- General aviation airport
- ICAO
- KONZ
- FAA LID
- ONZ
- City
- Detroit/Grosse Ile
- State
- Michigan
- Country
- United States
- Elevation
- 590 ft
- Coordinates
- 42.0991, -83.1615
- Runways
- 2 physical runways · 4 runway ends
- Longest runway
- 4,846 ft
- Weather reporting
- Reports METAR
- TAF
- Nearest KDTW
- AWOS/ASOS
- 119.675 MHz
- Time zone
- America/Detroit
- Sunset in
- 9h 19m
Run a flight school, FBO, or club here? Embed KONZ's live status on your website, free →
Nearby airports
Compare nearby METAR/TAF stations within 25, 50 and 100 NM before departure or arrival.
Within 25 NM
8 airports+2 more within 25 NM
25–50 NM
8 airports+2 more within 50 NM
50–100 NM
8 airports+2 more within 100 NM
RC flying fields nearby
AMA model-aircraft club fields around this airport: live wind, crosswind & flyability on each page.
- Downriver Aeromodelers - Sigler Rd , S Rockwood, MI · 8 mi
- Monroe Area Cloudbusters RC Club - Nike Park , Unnamed Road, MI · 13 mi
- Signal Seekers Radio Control Club Inc 1 , Inkster, MI · 16 mi
Historical Flying Weather at KONZ
2006–2025 · ATIS Alerts Flying Weather Index
Based on historical observations from 2006–2025, KONZ reported VFR conditions during about 77.5% of valid daylight observations, with an estimated 244 VFR flying days a year. July had the most VFR weather; December had the most instrument conditions. Surface winds averaged 6.5 kt, calm 12.7% of the time.
Full historical breakdown
Flight category by month
| Month | VFR % | MVFR % | IFR % | LIFR % |
|---|---|---|---|---|
| Jan | 57.5 | 28.1 | 8.8 | 5.6 |
| Feb | 66.5 | 21.7 | 8.0 | 3.9 |
| Mar | 75.3 | 16.6 | 5.1 | 3.0 |
| Apr | 81.3 | 12.3 | 4.3 | 2.1 |
| May | 82.1 | 12.3 | 4.0 | 1.6 |
| Jun | 87.4 | 9.2 | 2.5 | 0.9 |
| Jul | 89.8 | 8.0 | 1.6 | 0.6 |
| Aug | 87.9 | 9.4 | 2.3 | 0.3 |
| Sep | 81.7 | 13.0 | 3.5 | 1.7 |
| Oct | 81.2 | 13.6 | 3.9 | 1.3 |
| Nov | 74.9 | 18.3 | 4.4 | 2.4 |
| Dec | 56.5 | 31.1 | 7.3 | 5.1 |
Average wind by month
| Month | Mean wind (kt) |
|---|---|
| Jan | 7.7 kt |
| Feb | 7.4 kt |
| Mar | 7.2 kt |
| Apr | 7.4 kt |
| May | 6.0 kt |
| Jun | 5.6 kt |
| Jul | 5.1 kt |
| Aug | 5.0 kt |
| Sep | 5.4 kt |
| Oct | 6.6 kt |
| Nov | 7.2 kt |
| Dec | 7.3 kt |
Historical summary of past observations: not a forecast or safety rating. Always check the current METAR, TAF, and a weather briefing before flight.
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ONZ's real runway layout on the back, elevation and tower frequency on the front. Add your tail number on the sleeve.
Pilot PIREPs for Grosse Ile Municipal Airport (KONZ)
Community-submittedCommunity-submitted airport notes from pilots about runway conditions, wildlife, FBOs, fuel, turbulence, ramp access, and local tips.
Read recent community-submitted pilot notes for Grosse Ile Municipal Airport, including runway conditions, wildlife activity, FBO/fuel notes, turbulence, ramp access, and local airport tips.
⚠️ Pilot PIREPs on ATIS Alerts are community-submitted airport notes for situational awareness only. They are not official FAA PIREPs, NOTAMs, weather briefings, airport advisories, or flight-planning guidance. Always verify with official FAA/NWS sources, airport management, ATC, and current publications.
No Pilot PIREPs have been submitted for KONZ yet. Recently flew here? Help the next pilot by leaving a quick airport note.
Pilot PIREPs are community pilot notes for situational awareness only, not official FAA PIREPs or advisories. Verify with official sources. Notes are moderated before they appear; helpful marks and reports help us keep them useful.
⚠️ Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.
No D-ATIS at this airport, showing METAR.
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