Chicago/West Chicago, Illinois · field elev 759 ft
Density Altitude at Dupage (KDPA)
Dupage sits at 759 ft, and even a typical July afternoon (84 °F) only lifts density altitude to about 2,544 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 | 23.3 | −1,486 ft | 30.5 | −976 ft |
| February | 27.0 | −1,222 ft | 34.9 | −669 ft |
| March | 37.7 | −475 ft | 47.0 | 158 ft |
| April | 48.8 | 279 ft | 59.6 | 994 ft |
| May | 59.8 | 1,007 ft | 70.9 | 1,723 ft |
| June | 69.7 | 1,646 ft | 80.6 | 2,333 ft |
| July | 73.7 | 1,900 ft | 84.0 | 2,544 ft |
| August | 71.9 | 1,786 ft | 82.0 | 2,420 ft |
| September | 64.6 | 1,319 ft | 75.5 | 2,014 ft |
| October | 52.2 | 506 ft | 62.4 | 1,177 ft |
| November | 39.4 | −358 ft | 47.7 | 206 ft |
| December | 28.4 | −1,123 ft | 35.4 | −634 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 KDPA
DENSITY ALTITUDE
Field elevation 759 ft — the air behaves like 2,544 ft.
- PRESSURE ALT
- 760 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
- 06C — Schaumburg Regional
Chicago/Schaumburg · elev 801 ft
- KARR — Aurora Municipal
Chicago/Aurora · elev 712 ft
- 1C5 — Bolingbrook'S Clow International
Bolingbrook · elev 675 ft
- KORD — Chicago O'Hare International
Chicago · elev 680 ft
- 3CK — Lake In The Hills
Chicago/Lake In The Hills · elev 887 ft
- KLOT — Lewis University
Chicago/Romeoville · elev 679 ft
- KPWK — Chicago Exec
Chicago/Prospect Heights/Wheeling · elev 645 ft
- KDKB — De Kalb Taylor Municipal
De Kalb · elev 913 ft
Frequently asked questions
How high does density altitude get at KDPA in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at Dupage reaches roughly 2,544 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 KDPA on an average day?
It swings with the seasons: from roughly −1,486 ft at the coldest month's average temperature to about 1,900 ft at the warmest month's — all from a constant field elevation of 759 ft. The month-by-month table above carries the full year.
What is the field elevation of Dupage?
759 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KDPA (ICAO) / DPA (FAA), in Chicago/West Chicago, Illinois.