John Glenn Columbus International Airport

KCMH / CMH

Columbus, US

Last Updated
Jul 4, 16:51Z

Current Weather

Display Units
Recent 33 min ago
16:51Z

☀️ Day
VFR
Flight Rules
33°C
Temperature
Dewpoint: 21°C
10 kt
190° G18 kt
10 SM
Visibility
25,000 ft
Ceiling
Above Ground Level
1016 hPa
QNH
Altimeter Setting

Raw METAR

METAR KCMH 041651Z 19010G18KT 10SM FEW035 FEW200 BKN250 33/21 A3000 RMK AO2 SLP150 T03280211

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 815 ft
FEW 3,500 ft AGL
FEW 20,000 ft AGL
BKN 25,000 ft AGL
🌤️
FEW
Few (1/8-2/8 sky coverage)
3,500 ft
AGL (Above Ground)
4,315 ft AMSL
🌤️
FEW
Few (1/8-2/8 sky coverage)
20,000 ft
AGL (Above Ground)
20,815 ft AMSL
☁️
BKN
Broken (5/8-7/8 sky coverage)
25,000 ft
AGL (Above Ground)
25,815 ft AMSL

Weather Briefing

VFR

John Glenn Columbus International Airport is currently reporting visual flight rules (VFR) conditions with broken clouds at 25,000 feet and 10 SM visibility.

Wind Analysis

Winds are from the south (190°) at 10 knots with gusts to 18 knots. Runway 10L/28R is favored with a 0-knot headwind and 10-knot crosswind component (gusting to 18 knots crosswind).

Visibility & Ceiling

Visibility is 10 SM. The ceiling is 25000 feet AGL (broken), well above standard VFR minimums.

Temperature & Moisture

Temperature is 33°C (91°F) with a dewpoint of 21°C, indicating relatively dry conditions. High temperatures at this elevation may result in significant density altitude effects. Pilots should calculate density altitude and adjust performance expectations accordingly.

Forecast Outlook

The TAF forecast covers the next 24 hours. Conditions are expected to fluctuate between VFR and MVFR. VFR pilots should be prepared for deteriorating conditions. Expected weather includes: Light Thunderstorm Rain. There is a 30% probability of MVFR conditions with Light Thunderstorm Rain between 18:00Z and 00:00Z.

Pilot Recommendations

Conditions are favorable for visual flight. The forecast indicates conditions may deteriorate. Ensure you have fuel reserves and a viable alternate airport.

This briefing is generated from real-time METAR and TAF data. Always verify with official sources before flight.

QNH
1016 hPa
Sea Level Pressure
For altitude above MSL
QFE
989 hPa
Field Pressure
Height above aerodrome (815 ft)
Pressure Alt
733 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 3,089 ft (High - Reduced Performance)
ISA Deviation: +19.6°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KCMH 041135Z 0412/0512 00000KT P6SM BKN250 FM041600 24008KT P6SM BKN040 PROB30 0418/0424 5SM -TSRA BKN040CB FM050200 00000KT P6SM SCT050 BKN150
Upcoming Changes (Next 12 Hours)
17:23Z BASE
+0h
VFR
Visibility: >6SM
Ceiling: 25,000 ft
18:00Z PROB30
+1h
MVFR
Visibility: 5SM
Ceiling: 4,000 ft
Light Thunderstorm Rain
02:00Z FM050200
+9h
VFR
Visibility: >6SM
Ceiling: 15,000 ft

24-Hour Weather Evolution

Loading weather data...
Data Sources
  • • Current conditions from METAR observations
  • • Historical data from past 24 hours
  • • No forecast or predicted data included
  • • Data updated with each new METAR report
Chart Features
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Note: Future values beyond current TAF validity are estimates based on climatological data and trends. Always verify with current forecasts before flight operations.

Airport Runway Layout

N
CMH
10L
28R ✈️
10R
28L ✈️

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 10L/28R
Active: 28R
8,000 ft 150 ft ASP 94°
0.0 kt 10.0 kt
90° angle
✈️ 10R/28L
Active: 28L
10,125 ft 150 ft ASP 94°
0.0 kt 10.0 kt
90° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KCMH

10,766 observations | Sep 2025 - Jul 2026

Flight Rules Distribution

VFR
69.2%
MVFR
21.8%
IFR
6.8%
LIFR
2.3%

John Glenn Columbus International Airport typically experiences VFR conditions 69.2% of the time, though instrument-rated pilots will find IFR weather present approximately 9.1% of observations. Prevailing winds are from the S averaging 8.5 knots, with gusts recorded up to 37 knots. Calm conditions occur 11.8% of the time. Temperature extremes range from -22°C to 35°C, reflecting significant seasonal variation. The best months for VFR flying are July, September, October.

Wind Analysis

Prevailing Direction: S (180°)
Average Speed: 8.5 kt
Maximum Recorded: 37 kt
Calm Winds: 11.8%
Direction Distribution:
E
7.1%
N
11.1%
S
17.2%
W
15.6%
NE
6.4%
NW
9.2%
SE
8.5%
SW
13.1%

Temperature Range

Average: 9.3°C
Range: -22°C to 35°C
-22°C 35°C

Visibility

Average: 8.9 SM
Below 3 SM: 2.3%
Fog Frequency: 2.2%

Best Months for VFR

July September October

Runway Wind Analysis

Runway 10L/28R
Favorable wind: 100%
Avg crosswind: 5.3 kt
Runway 10R/28L
Favorable wind: 100%
Avg crosswind: 5.3 kt

Statistics computed from 10,766 METAR observations (Sep 2025 - Jul 2026). Data sourced from official aviation weather services. Updated daily.

John Glenn Columbus International Airport - Airport Information

Airport Details

ICAO Code: KCMH
IATA Code: CMH
Type: large airport
Status: active
Elevation: 815 ft MSL

Location

City: Columbus
Country: US
Latitude: 39.998001°
Longitude: -82.891899°
Time Zone: Etc/GMT+6

Runway Information

Runway 10L/28R
Length: 8,000 ft
Width: 150 ft
Surface: ASP
ILS: No
Runway 10R/28L
Length: 10,125 ft
Width: 150 ft
Surface: ASP
ILS: No

About John Glenn Columbus International Airport

Overview

John Glenn Columbus International Airport serves as a major aviation hub for central Ohio, located in the state capital of Columbus. Situated at an elevation of 815 feet MSL, the airport provides critical commercial and cargo transportation services for the metropolitan region. Its two substantial runways (10L/28R at 8000ft and 10R/28L at 10,125ft) support a wide range of aircraft operations.

Flying Conditions

Central Ohio experiences variable weather conditions that can significantly impact flight operations throughout the year. The airport's moderate elevation and midwestern location mean pilots should anticipate potential wind shifts, particularly during seasonal transition periods. Temperature and pressure variations can create challenging approach conditions, especially during winter and early spring months.

Notable Features

The airport's dual parallel runways (10L/28R and 10R/28L) provide operational flexibility for different aircraft types and wind conditions. Both runways are constructed with asphalt surfaces, capable of handling large commercial aircraft and providing substantial landing/takeoff infrastructure. The airport's geographic position allows for relatively straightforward navigation approaches from multiple directions.

Approach Considerations

Runway orientation (10/28) suggests prevailing wind patterns typically favor east-west approaches. The substantial runway lengths (8000ft and 10,125ft) accommodate a diverse range of aircraft, from regional commuters to larger commercial jets. Pilots should prepare for potential crosswind conditions and be prepared to utilize the full runway length during challenging meteorological scenarios.

Data Sources & Accuracy: Airport information sourced from OurAirports.com, a collaborative database of worldwide airport data. Weather data from official aviation weather services including NOAA Aviation Weather Center and international METAR/TAF providers. Information is updated regularly but pilots should always verify current conditions and NOTAMs through official channels before flight operations.

Official Data Sources

Weather NOAA Aviation Weather Center • International METAR/TAF Network
Airports OurAirports.com • Public domain airport database
NOTAMs FAA NOTAM System • ICAO NOTAM Distribution
Last updated: Jan 1, 1970 12:00 AM UTC

Disclaimer: Data is provided for informational purposes only. Pilots must verify all information through official sources before flight operations. Weather conditions change rapidly; always obtain a current briefing from approved weather services.