1
Runway
0
Frequencies
0
Procedures
0
NOTAMs
Quick Facts
ICAO
28LL
FAA
28LL
Elevation
630 ft MSL
Runways
1
Frequencies
0
Tower
No
Fuel
N/A
Coordinates
39.460, -88.868
Airport Information
Facility Type
AIRPORT
Elevation
630 ft MSL
Control Tower
No
Fuel Types
None listed
Coordinates
39.4603, -88.8684
Current Weather
SPECI KDEC 272014Z 09005KT 10SM BKN020 BKN065 28/23 A2990 RMK AO2 T02780233
Flight Category
MVFR
Wind
90° at 5 kt
Visibility
10+ SM
Temperature
27.8°C
Dewpoint
23.3°C
Altimeter
1012.60 inHg
Cloud Cover
BKN
Nearest weather from KDEC (22 NM away)
Observed 2026-06-27 20:14Z
Runways
| ID | Length | Width | Surface | Lights |
|---|---|---|---|---|
| 18/36 | 1,900 ft | 70 ft | TURF | - |
Active NOTAMs
No active NOTAMs for 28LL.
Nearby Airports in Illinois
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- 35IL — 7TH HEAVEN
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LA MOILLE
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- 70LL — ADAMS NUMBER 1
PONTIAC
- 70LL — ADAMS NUMBER 1
PONTIAC
Illinois airports
28LL Operational Overview
Location & Facility
Williamson Airport (28LL) is a airport located in Westervelt, Illinois, United States. The field sits at an elevation of 630 feet above mean sea level (MSL) at coordinates 39.4603°N, 88.8684°W.
Runways
Williamson Airport has 1 runway. The longest runway (18/36) measures 1,900 feet by 70 feet with a turf surface.
Communications & Operations
Williamson Airport is a non-towered (pilot-controlled) field.
Current Conditions
The current flight category at Williamson Airport is MVFR (Marginal VFR — reduced visibility or ceiling). Weather conditions are updated in real-time from official NOAA Aviation Weather Center observations.
Frequently Asked Questions
What is 28LL?
28LL is the ICAO identifier for Williamson Airport, a public-use airport located in Westervelt, Illinois, United States.
How many runways does Williamson Airport have?
Williamson Airport (28LL) has 1 runway. See the runway table above for dimensions and surface types.
What is the elevation of 28LL?
The field elevation of Williamson Airport is 630 feet above mean sea level (MSL).
Is fuel available at 28LL?
No fuel types are currently listed for Williamson Airport. Contact the FBO directly for availability.
What are the current weather conditions at 28LL?
The current flight category at Williamson Airport is MVFR. See the METAR section above for full decoded weather data including wind, visibility, temperature, and altimeter.
Are there active NOTAMs at 28LL?
There are currently no active NOTAMs for Williamson Airport.
How do I access complete data for 28LL?
Sign up for a free AeroCopilot account to access all frequencies, full NOTAM text with AI interpretation, decoded forecasts, and IFR procedure charts for Williamson Airport.
Where is Williamson Airport located?
Williamson Airport (28LL) is located in Westervelt, Illinois, United States, at an elevation of 630 ft MSL.