John Glenn Columbus International Airport

KCMH / CMH

Columbus, US

Last Updated
Jul 27, 05:51Z

Current Weather

Display Units
Fresh 6 min ago
05:51Z

☀️ Day
VFR
Flight Rules
21°C
Temperature
Dewpoint: 19°C
0 kt
10 SM
Visibility
Ceiling
Unlimited
1013 hPa
QNH
Altimeter Setting

Raw METAR

METAR KCMH 270551Z 00000KT 10SM SCT250 21/19 A2991 RMK AO2 SLP120 T02060194 10256 20200 56002

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 815 ft
SCT 25,000 ft AGL
SCT
Scattered (3/8-4/8 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 scattered clouds at 25,000 feet and 10 SM visibility.

Wind Analysis

Winds are calm, presenting no crosswind concerns for any runway.

Visibility & Ceiling

Visibility is 10 SM. No ceiling exists. Cloud layers reported: scattered at 25,000 ft.

Temperature & Moisture

Temperature is 21°C (70°F) with a dewpoint of 19°C. The temperature-dewpoint spread is very narrow, indicating saturated or near-saturated air. Fog formation or low cloud development is likely.

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: Mist. Temporary MVFR conditions are forecast with Mist between 09:00Z and 12:00Z.

Pilot Recommendations

Conditions are favorable for visual flight. The narrow temperature-dewpoint spread creates risk of fog formation, particularly during evening and early morning hours. 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
1013 hPa
Sea Level Pressure
For altitude above MSL
QFE
986 hPa
Field Pressure
Height above aerodrome (815 ft)
Pressure Alt
823 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 1,739 ft
ISA Deviation: +7.6°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KCMH 262320Z 2700/2724 29005KT P6SM SCT050 TEMPO 2709/2712 4SM BR FM271300 25007KT P6SM SCT025
Upcoming Changes (Next 12 Hours)
05:56Z BASE
+0h
VFR 290° 5 kt
Visibility: >6SM
09:00Z TEMPO
+4h
MVFR
Visibility: 4SM
Mist
13:00Z FM271300
+8h
VFR 250° 7 kt
Visibility: >6SM

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

Weather Statistics - KCMH

11,502 observations | Sep 2025 - Jul 2026

Flight Rules Distribution

VFR
69.9%
MVFR
21.3%
IFR
6.5%
LIFR
2.2%

John Glenn Columbus International Airport typically experiences VFR conditions 69.9% of the time, though instrument-rated pilots will find IFR weather present approximately 8.7% of observations. Prevailing winds are from the S averaging 8.4 knots, with gusts recorded up to 37 knots. Calm conditions occur 12.1% of the time. Temperature extremes range from -22°C to 36°C, reflecting significant seasonal variation. The best months for VFR flying are September, October, July.

Wind Analysis

Prevailing Direction: S (180°)
Average Speed: 8.4 kt
Maximum Recorded: 37 kt
Calm Winds: 12.1%
Direction Distribution:
E
6.9%
N
11.4%
S
17.1%
W
15.4%
NE
6.4%
NW
9%
SE
8.3%
SW
13.4%

Temperature Range

Average: 10.4°C
Range: -22°C to 36°C
-22°C 36°C

Visibility

Average: 8.9 SM
Below 3 SM: 2.2%
Fog Frequency: 2.1%

Best Months for VFR

September October July

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 11,502 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.