Carlsbad, New Mexico · field elev 3,295 ft
Density Altitude at Cavern City Air Trml (KCNM)
From a field elevation of 3,295 ft, a typical June afternoon at Cavern City Air Trml (96 °F) raises density altitude to about 6,358 ft — solidly into the range where performance charts deserve a close read.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 43.9 | 3,092 ft | 58.3 | 4,032 ft |
| February | 48.4 | 3,389 ft | 63.2 | 4,344 ft |
| March | 55.6 | 3,858 ft | 71.2 | 4,847 ft |
| April | 63.7 | 4,376 ft | 79.7 | 5,370 ft ▲ |
| May | 72.6 | 4,933 ft | 87.9 | 5,866 ft ▲ |
| June | 81.0 | 5,449 ft | 96.2 | 6,358 ft ▲ |
| July | 82.3 | 5,528 ft | 95.4 | 6,311 ft ▲ |
| August | 81.0 | 5,449 ft | 94.0 | 6,228 ft ▲ |
| September | 73.9 | 5,014 ft | 86.8 | 5,800 ft ▲ |
| October | 63.3 | 4,351 ft | 77.6 | 5,242 ft ▲ |
| November | 51.4 | 3,586 ft | 66.2 | 4,534 ft |
| December | 43.5 | 3,066 ft | 57.3 | 3,968 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 KCNM
DENSITY ALTITUDE caution
Field elevation 3,295 ft — the air behaves like 6,346 ft.
- PRESSURE ALT
- 3,297 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 New Mexico fields
- KATS — Artesia Municipal
Artesia · elev 3,545 ft
- E06 — Lea County/Zip Franklin Meml
Lovington · elev 3,979 ft
- KHOB — Lea County Regional
Hobbs · elev 3,661 ft
- E26 — Lea County/Jal
Jal · elev 3,118 ft
- KROW — Roswell Air Center
Roswell · elev 3,671 ft
- E02 — Timberon
Alamogordo · elev 6,963 ft
- 18T — Tatum
Tatum · elev 3,986 ft
- KALM — Alamogordo-White Sands Regional
Alamogordo · elev 4,200 ft
Frequently asked questions
How high does density altitude get at KCNM in summer?
On a typical June afternoon — around 96 °F at the nearest NOAA normals station — density altitude at Cavern City Air Trml reaches roughly 6,358 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 KCNM on an average day?
It swings with the seasons: from roughly 3,066 ft at the coldest month's average temperature to about 5,528 ft at the warmest month's — all from a constant field elevation of 3,295 ft. The month-by-month table above carries the full year.
What is the field elevation of Cavern City Air Trml?
3,295 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KCNM (ICAO) / CNM (FAA), in Carlsbad, New Mexico.