Sterling/Rockfalls, Illinois

KSQI Whiteside County/Jos H Bittorf Fld

Whiteside County/Jos H Bittorf Fld (KSQI) is a non-towered, public-use airport in Sterling/Rockfalls, Illinois, at 647.6 ft MSL. It has 2 runways: 07/25 (6,499 by 150 ft, asphalt), 18/36 (3,900 by 100 ft, asphalt). CTAF 123.0.

FAA NASR data effective Oct 29, 2026. Not for navigation; verify with current FAA charts and the Chart Supplement.

Airport

At a glance

Identifiers: ICAO KSQI, FAA SQI
Location: Sterling/Rockfalls, Illinois (Whiteside County). 2 NM S of the city center
Elevation: 647.6 ft MSL
Position: 41.7428° N, 89.6763° W
Control tower: No, non-towered
Sectional chart: Chicago
Magnetic variation: 2° W (2020)
Fuel: 100LL, Jet A
Ownership: Publicly owned, open to the public
Attendance: Daily 0800-1700

2 runways

Runways

Runway	Length × width	Surface	Edge lights
07/25	6,499 × 150 ft	Asphalt, fair condition	High intensity
18/36	3,900 × 100 ft	Asphalt, good condition	Medium intensity

Runway ends and traffic pattern

End	Pattern	Glide slope lights	Instrument	Displaced threshold	Landing distance
07	Left traffic	4-light PAPI, left	None listed	None listed	Not listed
25	Left traffic	None listed	ILS/DME	None listed	Not listed
18	Left traffic	None listed	None listed	None listed	Not listed
36	Left traffic	None listed	None listed	None listed	Not listed

VHF

Frequencies

CTAF: 123.0
UNICOM: 123.0
Clearance delivery: 128.0
Approach / departure: 126.0; "Rockford"

Weather station

AWOS-3PT SQI: 119.175

Within reach

Nearest public airports

Before you go

Brief KSQI in Ascent EFB.

Current weather, NOTAMs and the airport diagram for Whiteside County/Jos H Bittorf Fld, in the app on iPhone and iPad.

Not for navigation. Verify with current FAA charts and the Chart Supplement before flight.

Source: FAA NASR 28-day subscription, cycle effective Oct 29, 2026. Airport data changes every 28 days and NOTAMs can override it at any time.