Urbana, Illinois · field elev 735 ft
Density Altitude at Frasca Field (C16)
Frasca Field sits at 735 ft, and even a typical July afternoon (85 °F) only lifts density altitude to about 2,588 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 | 25.7 | −1,345 ft | 33.5 | −796 ft |
| February | 29.8 | −1,055 ft | 38.4 | −457 ft |
| March | 40.8 | −292 ft | 50.4 | 357 ft |
| April | 52.4 | 490 ft | 63.1 | 1,192 ft |
| May | 63.2 | 1,199 ft | 73.8 | 1,877 ft |
| June | 72.4 | 1,789 ft | 82.7 | 2,434 ft |
| July | 75.2 | 1,966 ft | 85.2 | 2,588 ft |
| August | 73.8 | 1,877 ft | 84.0 | 2,514 ft |
| September | 67.2 | 1,457 ft | 78.8 | 2,191 ft |
| October | 54.8 | 649 ft | 65.8 | 1,367 ft |
| November | 41.4 | −251 ft | 50.7 | 377 ft |
| December | 31.1 | −964 ft | 38.5 | −450 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 C16
DENSITY ALTITUDE
Field elevation 735 ft — the air behaves like 2,576 ft.
- PRESSURE ALT
- 736 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
- KCMI — University Of Illinois/Willard
Champaign/Urbana · elev 755 ft
- KTIP — Rantoul Ntl Avn Cntr-Frank Elliott Field
Rantoul · elev 738 ft
- 1C1 — Paxton
Paxton · elev 779 ft
- K96 — Tuscola
Tuscola · elev 665 ft
- KDNV — Vermilion Regional
Danville · elev 697 ft
- KDEC — Decatur
Decatur · elev 682 ft
- KPRG — Edgar County
Paris · elev 654 ft
- KBMI — Central Il Regional/Bloomington-Normal
Bloomington/Normal · elev 871 ft
Frequently asked questions
How high does density altitude get at C16 in summer?
On a typical July afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Frasca Field reaches roughly 2,588 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 C16 on an average day?
It swings with the seasons: from roughly −1,345 ft at the coldest month's average temperature to about 1,966 ft at the warmest month's — all from a constant field elevation of 735 ft. The month-by-month table above carries the full year.
What is the field elevation of Frasca Field?
735 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is C16 (FAA), in Urbana, Illinois.