Roberts International Airport

GLRB / ROB

Monrovia, LR

Last Updated
Jul 4, 13:30Z

Current Weather

Display Units
Aging 1 hour ago
13:30Z

☀️ Day
MVFR
Flight Rules
28°C
Temperature
Dewpoint: 24°C
10 kt
210°
10+ km
Visibility
1,600 ft
Ceiling
Above Ground Level
1014 hPa
QNH
Altimeter Setting

Raw METAR

METAR GLRB 041330Z 21010KT 9999 BKN016 FEW025CB 28/24 Q1014 NOSIG RMK CB-SW

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 31 ft
BKN 1,600 ft AGL
FEW 2,500 ft AGL (CB)
☁️
BKN
Broken (5/8-7/8 sky coverage)
1,600 ft
AGL (Above Ground)
1,631 ft AMSL
🌤️
FEW (CB)
Few (1/8-2/8 sky coverage)
2,500 ft
AGL (Above Ground)
2,531 ft AMSL

Weather Briefing

MVFR

Roberts International Airport is currently reporting marginal VFR (MVFR) conditions with broken clouds at 1,600 feet and 10 miles or greater visibility. Note: This observation is 1.8 hours old and conditions may have changed.

Wind Analysis

Winds are from the south-southwest (210°) at 10 knots. Runway 22 is favored with a 10-knot headwind and 2-knot crosswind component.

Visibility & Ceiling

Visibility is unrestricted. The ceiling is 1600 feet AGL (broken), placing conditions in the MVFR category. Caution: cumulonimbus (thunderstorm) clouds reported at 2,500 ft AGL, indicating convective activity in the area.

Temperature & Moisture

Temperature is 28°C (82°F) with a dewpoint of 24°C. The narrow temperature-dewpoint spread suggests high humidity and potential for visibility restrictions, especially during cooling periods.

Forecast Outlook

The TAF forecast covers the next 24 hours. IFR conditions are expected to persist or develop. An instrument rating and IFR flight plan are recommended. Expected weather includes: Light Drizzle, Thunderstorm Rain. Temporary IFR conditions are forecast with Thunderstorm Rain between 16:00Z and 20:00Z.

Pilot Recommendations

VFR pilots should exercise caution. Consider filing IFR if instrument rated, or postponing the flight if conditions are expected to deteriorate further. 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
1014 hPa
Sea Level Pressure
For altitude above MSL
QFE
1013 hPa
Field Pressure
Height above aerodrome (31 ft)
Pressure Alt
9 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 1,576 ft
ISA Deviation: +13.1°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF GLRB 041100Z 0412/0512 22010KT 9000 BKN016 FEW025CB BECMG 0413/0415 6000 -DZ BKN015 FEW024CB TEMPO 0416/0420 18006KT 5000 TSRA BKN014 FEW024CB
Upcoming Changes (Next 12 Hours)
15:15Z BASE
+0h
MVFR 220° 10 kt
Visibility: 9 km
Ceiling: 1,600 ft
16:00Z TEMPO
+1h
IFR 180° 6 kt
Visibility: 5 km
Ceiling: 1,400 ft
Thunderstorm Rain

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
LRB
04
22 ✈️

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 04/22
Active: 22
11,000 ft 150 ft ASP 31°
9.8 kt 1.7 kt
10° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - GLRB

9,768 observations | Sep 2025 - Jul 2026

Flight Rules Distribution

VFR
33.7%
MVFR
63.6%
IFR
1.7%
LIFR
1%

Roberts International Airport is frequently affected by reduced visibility conditions, with VFR weather only 33.7% of the time and IFR/LIFR conditions occurring in 2.7% of observations. Prevailing winds are from the SW averaging 6.6 knots, with gusts recorded up to 430 knots. Calm conditions occur 42.9% of the time. Temperature extremes range from 1°C to 35°C, reflecting significant seasonal variation. The best months for VFR flying are March, April, May.

Wind Analysis

Prevailing Direction: SW (225°)
Average Speed: 6.6 kt
Maximum Recorded: 430 kt
Calm Winds: 42.9%
Direction Distribution:
E
1.2%
N
3.6%
S
13.3%
W
7%
NE
4.7%
NW
2.8%
SE
1.9%
SW
22.5%

Temperature Range

Average: 26.8°C
Range: 1°C to 35°C
1°C 35°C

Visibility

Average: 10 SM
Below 3 SM: 0%
Fog Frequency: 1.1%

Best Months for VFR

March April May

Runway Wind Analysis

Runway 04/22
Favorable wind: 100%
Avg crosswind: 2.6 kt

Statistics computed from 9,768 METAR observations (Sep 2025 - Jul 2026). Data sourced from official aviation weather services. Updated daily.

Roberts International Airport - Airport Information

Airport Details

ICAO Code: GLRB
IATA Code: ROB
Type: large airport
Status: active
Elevation: 31 ft MSL

Location

City: Monrovia
Country: LR
Latitude: 6.233790°
Longitude: -10.362300°
Time Zone: Etc/GMT+1

Runway Information

Runway 04/22
Length: 11,000 ft
Width: 150 ft
Surface: ASP
ILS: No

Nearby Airports

VFR MVFR IFR LIFR No Data

About Roberts International Airport

Overview

Roberts International Airport serves as Liberia's primary international airport, located near Monrovia. Situated at a low elevation of 31 feet above mean sea level, the airport is a critical transportation hub for the country's aviation infrastructure. Its large airport classification indicates significant passenger and cargo handling capabilities.

Flying Conditions

Being located near the Atlantic coast at 6.233790, -10.362300, Roberts International experiences typical tropical maritime weather conditions with potential for humidity and occasional visibility challenges. Pilots should anticipate potential seasonal variations in wind patterns and precipitation. The airport's low elevation suggests minimal terrain-induced turbulence.

Notable Features

The airport features a single substantial runway (04/22) with an impressive 11,000-foot asphalt surface, accommodating a wide range of aircraft types and sizes. Its geographical position near the West African coastline means potential maritime weather influences and wind interactions. The runway's length provides significant operational flexibility for both commercial and cargo aircraft.

Approach Considerations

Runway 04/22's extended length allows for diverse approach and departure options with minimal restrictions. The airport's low elevation and coastal location suggest potential for stable approach conditions. Pilots should remain attentive to potential maritime weather influences during arrival and departure procedures.

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.