Manchester, Iowa · field elev 987 ft
Density Altitude at Manchester Municipal (C27)
Manchester Municipal sits at 987 ft, and even a typical July afternoon (82 °F) only lifts density altitude to about 2,705 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 | 17.1 | −1,645 ft | 26.1 | −1,001 ft |
| February | 21.3 | −1,343 ft | 30.6 | −684 ft |
| March | 33.8 | −461 ft | 43.7 | 218 ft |
| April | 46.3 | 394 ft | 57.8 | 1,158 ft |
| May | 58.3 | 1,190 ft | 69.6 | 1,920 ft |
| June | 68.3 | 1,837 ft | 79.1 | 2,518 ft |
| July | 71.6 | 2,047 ft | 82.1 | 2,705 ft |
| August | 69.3 | 1,901 ft | 80.4 | 2,599 ft |
| September | 61.5 | 1,399 ft | 74.1 | 2,205 ft |
| October | 49.2 | 589 ft | 61.0 | 1,366 ft |
| November | 35.4 | −350 ft | 45.1 | 313 ft |
| December | 23.6 | −1,178 ft | 32.0 | −586 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 C27
DENSITY ALTITUDE
Field elevation 987 ft — the air behaves like 2,698 ft.
- PRESSURE ALT
- 988 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 Iowa fields
- IA8 — Dyersville Area
Dyersville · elev 980 ft
- KIIB — James H Connell Field At Independence Municipal
Independence · elev 979 ft
- KMXO — Monticello Regional
Monticello · elev 833 ft
- I27 — Elkader
Elkader · elev 932 ft
- KOLZ — Oelwein Municipal
Oelwein · elev 1,076 ft
- C17 — Marion
Marion · elev 861 ft
- KVTI — Vinton Veterans Meml Airpark
Vinton · elev 842 ft
- 3Y2 — George L Scott Municipal
West Union · elev 1,232 ft
Frequently asked questions
How high does density altitude get at C27 in summer?
On a typical July afternoon — around 82 °F at the nearest NOAA normals station — density altitude at Manchester Municipal reaches roughly 2,705 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 C27 on an average day?
It swings with the seasons: from roughly −1,645 ft at the coldest month's average temperature to about 2,047 ft at the warmest month's — all from a constant field elevation of 987 ft. The month-by-month table above carries the full year.
What is the field elevation of Manchester Municipal?
987 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is C27 (FAA), in Manchester, Iowa.