Chicago/Aurora, Illinois · field elev 712 ft
Density Altitude at Aurora Municipal (KARR)
Aurora Municipal sits at 712 ft, and even a typical July afternoon (84 °F) only lifts density altitude to about 2,511 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 | 22.6 | −1,595 ft | 30.5 | −1,034 ft |
| February | 26.5 | −1,317 ft | 34.9 | −727 ft |
| March | 37.8 | −527 ft | 47.5 | 134 ft |
| April | 48.8 | 221 ft | 60.4 | 989 ft |
| May | 60.4 | 989 ft | 71.9 | 1,729 ft |
| June | 69.9 | 1,601 ft | 81.4 | 2,325 ft |
| July | 73.1 | 1,805 ft | 84.4 | 2,511 ft |
| August | 70.9 | 1,665 ft | 82.2 | 2,375 ft |
| September | 63.9 | 1,216 ft | 76.2 | 2,000 ft |
| October | 51.9 | 428 ft | 63.3 | 1,177 ft |
| November | 38.6 | −472 ft | 48.1 | 174 ft |
| December | 28.2 | −1,196 ft | 35.8 | −665 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 KARR
DENSITY ALTITUDE
Field elevation 712 ft — the air behaves like 2,486 ft.
- PRESSURE ALT
- 713 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
- 0C2 — Hinckley
Hinckley · elev 760 ft
- KDPA — Dupage
Chicago/West Chicago · elev 759 ft
- KDKB — De Kalb Taylor Municipal
De Kalb · elev 913 ft
- 1C5 — Bolingbrook'S Clow International
Bolingbrook · elev 675 ft
- 0C8 — Cushing Field Ltd
Newark · elev 640 ft
- KLOT — Lewis University
Chicago/Romeoville · elev 679 ft
- KJOT — Joliet Regional
Joliet · elev 582 ft
- C09 — Morris Municipal/James R Washburn Field
Morris · elev 585 ft
Frequently asked questions
How high does density altitude get at KARR in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at Aurora Municipal reaches roughly 2,511 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 KARR on an average day?
It swings with the seasons: from roughly −1,595 ft at the coldest month's average temperature to about 1,805 ft at the warmest month's — all from a constant field elevation of 712 ft. The month-by-month table above carries the full year.
What is the field elevation of Aurora Municipal?
712 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KARR (ICAO) / ARR (FAA), in Chicago/Aurora, Illinois.