Grissom Air Reserve Base

KGUS / GUS

Peru, US

Last Updated
Mar 4, 20:55Z

Current Weather

Display Units
Recent 41 min ago
20:55Z

🌙 Night
IFR
Flight Rules
8°C
Temperature
Dewpoint: 6°C
9 kt
90°
9 SM
Visibility
600 ft
Ceiling
Above Ground Level
1018 hPa
QNH
Altimeter Setting

Raw METAR

METAR KGUS 042055Z AUTO 09009KT 9SM OVC006 08/06 A3006 RMK AO2 RAB07E17DZB17E19 CIG 005 RWY23 SLP187 P0001 60001 T00780064 57020 $

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 812 ft
OVC 600 ft AGL
☁️
OVC
Overcast (8/8 sky coverage)
600 ft
AGL (Above Ground)
1,412 ft AMSL
QNH
1018 hPa
Sea Level Pressure
For altitude above MSL
QFE
991 hPa
Field Pressure
Height above aerodrome (812 ft)
Pressure Alt
670 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 25 ft
ISA Deviation: -5.4°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF AMD KGUS 041635Z 0416/0520 10009KT 4800 BR OVC004 QNH3004INS TEMPO 0416/0420 2400 -DZ BR OVC003 TEMPO 0420/0423 3200 -RA BR OVC002 BECMG 0422/0423 11008KT 4800 -SHRA BKN003 OVC010 QNH2999INS TEMPO 0500/0506 22015G25KT 1600 TSRA BR SCT002 BKN004 OVC010CB BECMG 0517/0518 19010G15KT 9999 NSW SCT008 BKN015 BKN120 OVC200 QNH2986INS TX08/0421Z TN05/0416Z
Upcoming Changes (Next 12 Hours)
21:35Z BASE
+0h
LIFR 100° 9 kt
Visibility: 4.8 km
Ceiling: 400 ft
Mist
22:00Z BECMG
+1h
LIFR 110° 8 kt
Visibility: 4.8 km
Ceiling: 300 ft
Light Showers Rain
00:00Z TEMPO
+3h
LIFR 220° 15 kt
Visibility: 1.6 km
Ceiling: 400 ft
Thunderstorm Rain, Mist

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
GUS
05 ✈️
23

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 05/23
Active: 05
12,501 ft 200 ft ASP 44°
6.9 kt 5.8 kt
40° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KGUS

6,580 observations | Sep 2025 - Mar 2026

Flight Rules Distribution

VFR
52.7%
MVFR
28.6%
IFR
13.5%
LIFR
5.2%

Grissom Air Reserve Base is frequently affected by reduced visibility conditions, with VFR weather only 52.7% of the time and IFR/LIFR conditions occurring in 18.7% of observations. Prevailing winds are from the W averaging 9.8 knots, with gusts recorded up to 37 knots. Temperature extremes range from -22°C to 32°C, reflecting significant seasonal variation. The best months for VFR flying are September, October, February.

Wind Analysis

Prevailing Direction: W (270°)
Average Speed: 9.8 kt
Maximum Recorded: 37 kt
Calm Winds: 9%
Direction Distribution:
N
6.4%
NE
6.8%
E
9.7%
SE
6.3%
S
11.6%
SW
13.9%
W
26.8%
NW
9.4%

Temperature Range

Average: 3.7°C
Range: -22°C to 32°C
-22°C 32°C

Visibility

Average: 9 SM
Below 3 SM: 2%
Fog Frequency: 2.5%

Best Months for VFR

September October February

Runway Wind Analysis

Runway 05/23
Favorable wind: 100%
Avg crosswind: 6 kt

Statistics computed from 6,580 METAR observations (Sep 2025 - Mar 2026). Data sourced from official aviation weather services. Updated daily.

Grissom Air Reserve Base - Airport Information

Airport Details

ICAO Code: KGUS
IATA Code: GUS
Type: medium airport
Status: active
Elevation: 812 ft MSL

Location

City: Peru
Country: US
Latitude: 40.648102°
Longitude: -86.152100°
Time Zone: Etc/GMT+6

Runway Information

Runway 05/23
Length: 12,501 ft
Width: 200 ft
Surface: ASP
ILS: No

About Grissom Air Reserve Base

Overview

Grissom Air Reserve Base is located in Peru, Indiana, serving as a medium-sized military airfield. The base sits at an elevation of 812 feet MSL and supports critical air mobility and reserve operations in the midwest region. Its strategic location and substantial 12,501-foot runway make it a significant regional aviation facility.

Flying Conditions

Pilots can expect predominantly favorable flying conditions, with 53.4% of observations reporting VFR weather. The base experiences moderate wind conditions, with a prevailing westerly wind at an average of 10.1 knots. Temperature variations are significant, ranging from -19°C to 32°C, which can impact aircraft performance and flight planning.

Notable Features

The airport features a single runway (05/23) with an asphalt surface, capable of handling substantial aircraft operations. Wind analysis shows 100% runway favorability, with an average crosswind of 6.3 knots. Visibility is generally excellent, averaging 9 statute miles, with only 1.9% of observations reporting visibility below 3 miles.

Approach Considerations

September through November represent the most consistent VFR months for operations. Pilots should anticipate westerly winds and prepare for potential temperature-related performance considerations. The long runway provides substantial operational flexibility, and the low percentage of IFR conditions (14.5%) suggests generally reliable approach and landing environments.

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.