Carmi, Illinois · field elev 388 ft
Density Altitude at Carmi Municipal (KCUL)
Carmi Municipal sits at 388 ft, and even a typical July afternoon (88 °F) only lifts density altitude to about 2,313 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 | 31.2 | −1,390 ft | 41.1 | −703 ft |
| February | 34.7 | −1,146 ft | 46.0 | −370 ft |
| March | 44.3 | −485 ft | 56.1 | 306 ft |
| April | 55.5 | 267 ft | 68.0 | 1,082 ft |
| May | 65.1 | 895 ft | 76.8 | 1,641 ft |
| June | 73.9 | 1,458 ft | 85.3 | 2,171 ft |
| July | 76.7 | 1,635 ft | 87.6 | 2,313 ft |
| August | 74.9 | 1,522 ft | 86.8 | 2,264 ft |
| September | 68.1 | 1,088 ft | 81.4 | 1,930 ft |
| October | 56.4 | 326 ft | 70.1 | 1,216 ft |
| November | 44.1 | −499 ft | 56.2 | 313 ft |
| December | 35.0 | −1,125 ft | 45.0 | −437 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 KCUL
DENSITY ALTITUDE
Field elevation 388 ft — the air behaves like 2,338 ft.
- PRESSURE ALT
- 389 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
- —
- AIR DENSITY
- —
- WATER · GRAINS/LB
- —
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
- KFWC — Fairfield Municipal
Fairfield · elev 434 ft
- KHSB — Harrisburg-Raleigh
Harrisburg · elev 398 ft
- KAJG — Mount Carmel Municipal
Mount Carmel · elev 429 ft
- KMVN — Mount Vernon
Mount Vernon · elev 480 ft
- KFOA — Flora Municipal
Flora · elev 473 ft
- KOLY — Olney-Noble
Olney-Noble · elev 482 ft
- H96 — Benton Municipal
Benton · elev 444 ft
- KMWA — Veterans Airport Of Southern Illinois
Marion · elev 472 ft
Frequently asked questions
How high does density altitude get at KCUL in summer?
On a typical July afternoon — around 88 °F at the nearest NOAA normals station — density altitude at Carmi Municipal reaches roughly 2,313 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 KCUL on an average day?
It swings with the seasons: from roughly −1,390 ft at the coldest month's average temperature to about 1,635 ft at the warmest month's — all from a constant field elevation of 388 ft. The month-by-month table above carries the full year.
What is the field elevation of Carmi Municipal?
388 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KCUL (ICAO) / CUL (FAA), in Carmi, Illinois.