Chicago/Lake In The Hills, Illinois · field elev 887 ft
Density Altitude at Lake In The Hills (3CK)
Lake In The Hills sits at 887 ft, and even a typical July afternoon (84 °F) only lifts density altitude to about 2,700 ft — heat still trims performance, but the field rarely turns high-and-hot.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 22.9 | −1,354 ft | 31.5 | −746 ft |
| February | 25.8 | −1,147 ft | 35.2 | −488 ft |
| March | 36.6 | −392 ft | 46.8 | 304 ft |
| April | 48.0 | 384 ft | 59.2 | 1,126 ft |
| May | 59.6 | 1,152 ft | 71.3 | 1,905 ft |
| June | 69.4 | 1,784 ft | 80.3 | 2,471 ft |
| July | 73.3 | 2,032 ft | 84.0 | 2,700 ft |
| August | 71.6 | 1,924 ft | 82.0 | 2,576 ft |
| September | 63.4 | 1,399 ft | 74.4 | 2,101 ft |
| October | 52.2 | 665 ft | 61.9 | 1,302 ft |
| November | 39.0 | −226 ft | 47.5 | 351 ft |
| December | 28.0 | −992 ft | 35.5 | −468 ft |
▲ above 5,000 ft · ⚠ above 8,000 ft. These are planning references at standard pressure and dry air — afternoon humidity and low pressure both push the real number higher. Run today's values below.
Run today’s numbers for 3CK
DENSITY ALTITUDE
Field elevation 887 ft — the air behaves like 2,700 ft.
- PRESSURE ALT
- 888 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
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- AIR DENSITY
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- WATER · GRAINS/LB
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For training and reference · verify with official sources and your POH before flight · no tool on this site renders a go / no-go judgment
Nearby Illinois fields
- 10C — Galt Field
Greenwood/Wonder Lake · elev 875 ft
- C81 — Campbell
Grayslake · elev 788 ft
- 06C — Schaumburg Regional
Chicago/Schaumburg · elev 801 ft
- 0C0 — Dacy
Harvard · elev 913 ft
- KDPA — Dupage
Chicago/West Chicago · elev 759 ft
- KPWK — Chicago Exec
Chicago/Prospect Heights/Wheeling · elev 645 ft
- KORD — Chicago O'Hare International
Chicago · elev 680 ft
- KDKB — De Kalb Taylor Municipal
De Kalb · elev 913 ft
Frequently asked questions
How high does density altitude get at 3CK in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at Lake In The Hills reaches roughly 2,700 ft at standard pressure. Hotter-than-normal days, low pressure, and humidity all push it higher, so run the day's actual numbers before flying.
What is the density altitude at 3CK on an average day?
It swings with the seasons: from roughly −1,354 ft at the coldest month's average temperature to about 2,032 ft at the warmest month's — all from a constant field elevation of 887 ft. The month-by-month table above carries the full year.
What is the field elevation of Lake In The Hills?
887 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 3CK (FAA), in Chicago/Lake In The Hills, Illinois.