Newark, Illinois · field elev 640 ft
Density Altitude at Cushing Field Ltd (0C8)
Cushing Field Ltd sits at 640 ft, and even a typical July afternoon (85 °F) only lifts density altitude to about 2,454 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 | 23.4 | −1,628 ft | 31.2 | −1,075 ft |
| February | 27.4 | −1,343 ft | 35.6 | −769 ft |
| March | 38.3 | −582 ft | 47.7 | 58 ft |
| April | 50.3 | 232 ft | 60.9 | 932 ft |
| May | 61.6 | 978 ft | 72.1 | 1,653 ft |
| June | 71.4 | 1,609 ft | 81.7 | 2,256 ft |
| July | 75.0 | 1,837 ft | 84.9 | 2,454 ft |
| August | 72.8 | 1,697 ft | 82.7 | 2,318 ft |
| September | 66.1 | 1,269 ft | 77.4 | 1,988 ft |
| October | 53.6 | 452 ft | 64.4 | 1,160 ft |
| November | 40.3 | −445 ft | 49.0 | 145 ft |
| December | 29.1 | −1,223 ft | 36.7 | −692 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 0C8
DENSITY ALTITUDE
Field elevation 640 ft — the air behaves like 2,460 ft.
- PRESSURE ALT
- 641 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
- C09 — Morris Municipal/James R Washburn Field
Morris · elev 585 ft
- 8N2 — Skydive Chicago
Ottawa · elev 616 ft
- 0C2 — Hinckley
Hinckley · elev 760 ft
- KARR — Aurora Municipal
Chicago/Aurora · elev 712 ft
- KJOT — Joliet Regional
Joliet · elev 582 ft
- KLOT — Lewis University
Chicago/Romeoville · elev 679 ft
- 1C5 — Bolingbrook'S Clow International
Bolingbrook · elev 675 ft
- KDTG — Dwight
Dwight · elev 632 ft
Frequently asked questions
How high does density altitude get at 0C8 in summer?
On a typical July afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Cushing Field Ltd reaches roughly 2,454 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 0C8 on an average day?
It swings with the seasons: from roughly −1,628 ft at the coldest month's average temperature to about 1,837 ft at the warmest month's — all from a constant field elevation of 640 ft. The month-by-month table above carries the full year.
What is the field elevation of Cushing Field Ltd?
640 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 0C8 (FAA), in Newark, Illinois.