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Whiteside County Airport-Joseph H Bittorf Field satellite view
📍 Sterling/Rockfalls⬆ 648 ft2 runways
KSQI · SQI

Whiteside County Airport-Joseph H Bittorf Field

41.74280°N
-89.67630°W
ARR / DAY
3
18.2%
DEP / DAY
2
6.7%

Whiteside County Airport-Joseph H Bittorf Field (KSQI/SQI) is a small general aviation airport located in Sterling/Rockfalls, IL, 47 mi south west of Rockford. It features 2 runways with the longest being 6,499 feet. SkyMeter has observed roughly 3 arrivals and 2 departures per day on average over the last 7 days.

Current weather

Latest METAR observation

1h ago
Temp
86°F
Wind
9 kts
20°
Visib
10+ km
Ceil
METAR KSQI 281956Z AUTO 02009G14KT 10SM CLR 30/17 A2988 RMK AO2 SLP112 T03000172 $

Runway intelligence

Which runway carries the operations, observed over the last 30 days

25
44% of ops
42 land · 6 TO
07
26% of ops
25 land · 12 TO
18
21% of ops
20 land · 6 TO
36
9% of ops
9 land · 11 TO
Runway 25 carries 44% of operations (42 landings, 6 takeoffs) over the last 30 days. The next most-used is 07 at 26%.

Approach quality

Per-runway unstable-approach, go-around, and long-rollout rates

25 42 landings
UA 0%
07 25 landings
UA 0%
18 20 landings
UA 0%
36 9 landings
UA 0%
Approaches to 25 show a 0% unstable-approach rate (0 UA events from 42 landings).Phase B will add wind-correlation: which crosswind band produces most UA events.

Traffic behavior

When the field is busy: hourly + weekday vs weekend

Daily avg
4.5
flights/day · 136 total
Busy hour (local)
2pm
also 3pm · 1pm
Day vs night
68%
06:00–20:00 local
Traffic concentrates around 1pm–2pm local, averaging 4.5 flights/day. Weekend volume runs 1.0× weekday (4.8 vs 4.7 daily).

Aircraft character

What's actually flying here: top types over the last 30 days

Activity is led by (41% of 114 flights). Top three types: , , .

Communications Frequencies

2026-06-11
Type Freq (MHz) Hours
CTAF 123.000
APCH 126.000
APCH 327.000
UNICOM 123.000
AWOS 119.175
CD/P 128.000
OTHER 128.000
Airport operations
ARTCC:
ZAU
Mag var:
2° W
Fuel:
100LL

Hourly traffic

Avg movements per hour · local time · last 30 days

12a 1a 2a 3a 4a 5a 6a 7a 8a 9a 10a 11a 12p 1p 2p 3p 4p 5p 6p 7p 8p 9p 10p 11p
© SkyMeter · All flight data subject to ODbL attribution · Updated 21:50 UTC