WxDecoder

31D Weather Inter County Airport

Irwin, PennsylvaniaElevation 1,250 ftSmall airport
OFF-FIELD REFERENCE
Nearest report: KAGC · 7 NM W · 53 min old
No ceiling, visibility 10 SM.
No on-field report, so no field flight category. Conditions at the field may differ.
OFF-FIELD REFERENCE · KAGC
WIND
130@3
steady
VISIBILITY
10 SM
16.1 km
CEILING
None
no BKN/OVC layer
FORECAST & PILOT NOTES · SUPPLEMENTAL

Extended forecast and pilot notes

No aviation METAR is published for this airport. The nearest National Weather Service station reports wind from 140° at 4 kt, visibility 10 SM, temperature 14C. Treat this as supplemental, not an aviation observation. Forecast suggests tonight mostly clear, low near 42F, 0% chance of precipitation. Key risks: no significant hazards are highlighted right now, but always confirm against an official briefing.

DayConditionsTemp FWindGustsPrecipPilot note
Tonight Mostly Clear 42 S 2 kt – 0%
Monday Sunny 68/44 SW 5 kt – 1%
Tuesday Mostly Sunny 67/46 NE 4 kt – 0%
Wednesday Partly Sunny 70/47 SE 4 kt – 0%
Thursday Sunny 72/48 SW 7 kt – 2%
Friday Mostly Sunny 72/48 SW 4 kt – 2%
Saturday Partly Sunny 71/54 S 4 kt – 9%
Sunday Chance Rain Showers 68 S 9 kt – 41%

Source: National Weather Service (office PBZ). Forecast issued 0145Z.

Radar

Radar data: NOAA/NWS MRMS composite reflectivity. For situational awareness only, not a substitute for an official weather briefing.

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RUNWAYS & WIND
Crosswind calculator
No runway layout is available for 31D. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail & declared distances

1 runway · longest 1,800 ft

E/W
Dimensions
1,800 x 120 ft
Surface
Turf (fair)
RWY E
Traffic patternLeft
RWY W
Traffic patternLeft

Runway data from the FAA NASR dataset (effective 2026-06-11). Verify with the current Chart Supplement and NOTAMs.

FIELD CONDITIONS

Field elevation

Field elevation
1,250 ft MSL

Density and pressure altitude need a current temperature and altimeter from the METAR.

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
2225Z 6:25 PM
Sunrise
1141Z 7:41 AM
Loggable night
2253Z (6:53 PM local) → 1113Z (7:13 AM local)
end of evening to start of morning civil twilight
Position lights required
2225Z (6:25 PM local) → 1141Z (7:41 AM local)
sunset to sunrise (91.209)
Night passenger currency
2325Z (7:25 PM local) → 1041Z (6:41 AM local)
1 hr after sunset to 1 hr before sunrise (61.57(b))

FAA definitions, shown in Zulu with airport-local time. Verify for your operation.

AIRPORT INFORMATION

Facility & services

Inter County Airport is in Irwin, Pennsylvania. Field elevation 1,250 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPrivately owned
UseOpen to the public
TypeSmall airport
ManagerPAMELA EYLER
Manager phone412-751-9009
AttendedIREG
CHARTS & AIRSPACE
ICAO / IATA31D
SectionalDETROIT
Center (ARTCC)CLEVELAND
Flight service (AFSS)ALTOONA
RegionPennsylvania
CountryUnited States
Coordinates40.3312, -79.7802
Distance from city4 NM W
SERVICES & LIGHTING
Control towerNon-towered
CTAF122.900
FREQUENCIES

Communications

122.900
CTAF
CTAF

Not all tower/ground/approach frequencies are in our datasets. Verify with the FAA Chart Supplement.

AIRCRAFT ACTIVITY

31D traffic patterns

2026-07-13 to 2026-07-31, 2 days observed · data 2026-10-23

Insufficient confidence
TRAFFIC VOLUME (30-DAY)
AVG LANDINGS/DAY
1
AVG OPS/DAY
1.5
Activity trend over 2 days: rising, from 1 to 2 operations per dayOperations trend (2 days)

Busiest day: Fri · Busiest month: Jul

FLEET MIX
Helicopter 60%Piston single 20%Unknown 20%

Mostly rotorcraft.

TOP AIRCRAFT TYPES
›R44 (Helicopter) · ~3 landings/mo
›C177 (Piston single) · ~1 landings/mo
›CC11 (Unknown) · ~1 landings/mo
Data limitations (4)
›ADS-B coverage is incomplete; counts are an observed lower bound, not official totals.
›Some aircraft do not transmit usable ADS-B and are not counted.
›Aircraft types and based estimates are inferred and may be wrong.
›This is not official ATC, FAA, or airport data.
NEARBY AIRPORTS

Weather reference stations

31D has no on-field report. Nearest reporting station: KAGC (7 NM W, VFR).

KAGC Allegheny County Airport
7 NM W
VFR
KLBE Arnold Palmer Regional Airport
18 NM E
VFR
KPIT Pittsburgh International Airport
23 NM NW
VFR
KAFJ Washington County Airport
26 NM SW
VFR
KBTP Pittsburgh/Butler Regional Airport
28 NM N
VFR
KIDI Indiana County–Jimmy Stewart Airport
36 NM NE
VFR
AIRPORT REMARKS

Operational remarks

›TURF RUNWAY MAY BE SOFT DURING SPRING THAW AND WET PERIODS. CALL FOR CURRENT RUNWAY CONDITIONS.
›MARKED WATER TANK APRXLY NINE TENTHS OF A MI EAST OF ARPT, UNMARKED CELL TOWER NEAR WATER TANK & MARKED TRANSMISSION LINE APRXLY 1460 FT EAST OF ARPT.
›ULTRALIGHT ACTIVITY ON & INVOF ARPT.
›DEER ON AND IN VICINITY OF AIRPORT.
›FENCE APRXLY 4 FT HIGH ALONG SOUTH SIDE OF RY "W" AND EXTDS APRXLY 500 FT INTO THE APRCH SURFACE.
›RWY E/W 275 FT UNMARKED SAFETY AREA WEST END; 225 FT UNMARKED SAFETY AREA EAST END .
›RWY E/W WIDTH VARIES 118-178 FT.
›FOR CD CTC PITTSBURGH APCH AT 412-472-5591
›AIRPORT MANAGER ALTERNATE NUMBER 724-989-6560
›DOGLEG IN RY APRXLY 15 DEGS.
›RY E/W 235 FT UNMKD SAFETY AREA WEST END; 281 FT UNMKD SAFETY AREA EAST END.
›RY E/W WIDTH VARIES 120-275 FT.
›RY E MKD WITH YELLOW CONES.
›RY W MKD WITH YELLOW CONES.
›CTLNG OBSTN EXCEEDS A 45 DEG SLP.
›TIE DOWN ROPES ARE NOT SUPPLIED.
›VFR OPNS ONLY
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗Wikipedia
↗31D on OurAirports
FREQUENTLY ASKED
Does 31D have a METAR?
No on-field METAR is issued for 31D. This page uses the nearest reporting station as a reference.
Does 31D have a TAF?
No TAF is issued directly for 31D. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at 31D?
31D sits at 1,250 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for 31D?
No. wxdecoder.com is for education and situational awareness only. It is not an official weather briefing or a substitute for official sources, NOTAM review, and pilot judgment.
This app is for aviation weather education, training, and situational awareness only. It is not a substitute for an official weather briefing, approved flight-planning software, flight service, dispatch procedures, current FAA regulations, or pilot judgment. Always verify weather with official sources before flight.