Chanute, Kansas · field elev 1,003 ft
Density Altitude at Chanute Martin Johnson (KCNU)
Chanute Martin Johnson sits at 1,003 ft, and even a typical July afternoon (92 °F) only lifts density altitude to about 3,306 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 | 33.7 | −448 ft | 44.3 | 279 ft |
| February | 38.3 | −130 ft | 49.7 | 642 ft |
| March | 48.3 | 548 ft | 60.2 | 1,334 ft |
| April | 57.7 | 1,171 ft | 69.6 | 1,939 ft |
| May | 66.9 | 1,767 ft | 77.8 | 2,457 ft |
| June | 76.2 | 2,357 ft | 86.9 | 3,019 ft |
| July | 80.6 | 2,631 ft | 91.6 | 3,306 ft |
| August | 79.6 | 2,569 ft | 91.3 | 3,287 ft |
| September | 71.1 | 2,035 ft | 83.0 | 2,780 ft |
| October | 59.4 | 1,282 ft | 71.5 | 2,060 ft |
| November | 47.1 | 468 ft | 58.5 | 1,223 ft |
| December | 37.1 | −213 ft | 47.4 | 488 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 KCNU
DENSITY ALTITUDE
Field elevation 1,003 ft — the air behaves like 3,330 ft.
- PRESSURE ALT
- 1,004 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 Kansas fields
- K88 — Allen County
Iola · elev 1,016 ft
- 2K7 — Neodesha Municipal
Neodesha · elev 841 ft
- 3JA — Yates Center Municipal
Yates Center · elev 1,128 ft
- 11K — Squadron Field
Erie · elev 947 ft
- 1K7 — Fredonia
Fredonia · elev 882 ft
- KPPF — Tri-City
Parsons · elev 901 ft
- KIDP — Independence Municipal
Independence · elev 825 ft
- KCFV — Coffeyville Municipal
Coffeyville · elev 754 ft
Frequently asked questions
How high does density altitude get at KCNU in summer?
On a typical July afternoon — around 92 °F at the nearest NOAA normals station — density altitude at Chanute Martin Johnson reaches roughly 3,306 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 KCNU on an average day?
It swings with the seasons: from roughly −448 ft at the coldest month's average temperature to about 2,631 ft at the warmest month's — all from a constant field elevation of 1,003 ft. The month-by-month table above carries the full year.
What is the field elevation of Chanute Martin Johnson?
1,003 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KCNU (ICAO) / CNU (FAA), in Chanute, Kansas.