0
Runways
0
Frequencies
0
Procedures
0
NOTAMs
Quick Facts
ICAO
IS45
FAA
IS45
Elevation
738 ft MSL
Runways
0
Frequencies
0
Tower
No
Fuel
N/A
Coordinates
39.977, -91.334
Airport Information
Facility Type
AIRPORT
Elevation
738 ft MSL
Control Tower
No
Fuel Types
None listed
Coordinates
39.9767, -91.3340
Current Weather
SPECI KUIN 280035Z AUTO 11005KT 10SM SCT024 BKN046 BKN075 25/22 A2989 RMK AO2 T02500222 TSNO
Flight Category
VFR
Wind
110° at 5 kt
Visibility
10+ SM
Temperature
25°C
Dewpoint
22.2°C
Altimeter
1012.30 inHg
Cloud Cover
BKN
Nearest weather from KUIN (9 NM away)
Observed 2026-06-28 00:35Z
Active NOTAMs
No active NOTAMs for IS45.
Nearby Airports in Illinois
Nearest airports
- 35IL — 7TH HEAVEN
LA MOILLE
- 35IL — 7TH HEAVEN
LA MOILLE
- KSPI — ABRAHAM LINCOLN CAPITAL
SPRINGFIELD
- 70LL — ADAMS NUMBER 1
PONTIAC
- 70LL — ADAMS NUMBER 1
PONTIAC
Illinois airports
IS45 Operational Overview
Location & Facility
Mast Field (IS45) is a airport located in Quincy, Illinois, United States. The field sits at an elevation of 738 feet above mean sea level (MSL) at coordinates 39.9767°N, 91.3340°W.
Communications & Operations
Mast Field is a non-towered (pilot-controlled) field.
Current Conditions
The current flight category at Mast Field is VFR (Visual Flight Rules — good flying conditions). Weather conditions are updated in real-time from official NOAA Aviation Weather Center observations.
Frequently Asked Questions
What is IS45?
IS45 is the ICAO identifier for Mast Field, a public-use airport located in Quincy, Illinois, United States.
How many runways does Mast Field have?
Mast Field (IS45) has 0 runways. See the runway table above for dimensions and surface types.
What is the elevation of IS45?
The field elevation of Mast Field is 738 feet above mean sea level (MSL).
Is fuel available at IS45?
No fuel types are currently listed for Mast Field. Contact the FBO directly for availability.
What are the current weather conditions at IS45?
The current flight category at Mast Field is VFR. See the METAR section above for full decoded weather data including wind, visibility, temperature, and altimeter.
Are there active NOTAMs at IS45?
There are currently no active NOTAMs for Mast Field.
How do I access complete data for IS45?
Sign up for a free AeroCopilot account to access all frequencies, full NOTAM text with AI interpretation, decoded forecasts, and IFR procedure charts for Mast Field.
Where is Mast Field located?
Mast Field (IS45) is located in Quincy, Illinois, United States, at an elevation of 738 ft MSL.