Claremont, New Hampshire · field elev 543 ft
Density Altitude at Claremont Municipal (KCNH)
Claremont Municipal sits at 543 ft, and even a typical July afternoon (83 °F) only lifts density altitude to about 2,187 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 | 19.2 | −2,052 ft | 29.3 | −1,330 ft |
| February | 22.0 | −1,850 ft | 33.5 | −1,036 ft |
| March | 31.0 | −1,211 ft | 42.3 | −428 ft |
| April | 43.3 | −360 ft | 55.8 | 478 ft |
| May | 55.8 | 478 ft | 69.5 | 1,368 ft |
| June | 64.5 | 1,047 ft | 77.2 | 1,856 ft |
| July | 69.9 | 1,394 ft | 82.5 | 2,187 ft |
| August | 67.6 | 1,247 ft | 80.7 | 2,075 ft |
| September | 60.3 | 774 ft | 73.4 | 1,617 ft |
| October | 47.8 | −56 ft | 59.5 | 721 ft |
| November | 36.6 | −820 ft | 46.4 | −150 ft |
| December | 26.3 | −1,543 ft | 34.9 | −938 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 KCNH
DENSITY ALTITUDE
Field elevation 543 ft — the air behaves like 2,218 ft.
- PRESSURE ALT
- 544 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 Hampshire fields
- 2B3 — Parlin Field
Newport · elev 784 ft
- KLEB — Lebanon Municipal
Lebanon · elev 603 ft
- 8B1 — Hawthorne-Feather Airpark
Hillsboro · elev 600 ft
- KEEN — Dillant/Hopkins
Keene · elev 488 ft
- 2N2 — Newfound Valley
Bristol · elev 510 ft
- 1P1 — Plymouth Municipal
Plymouth · elev 506 ft
- KAFN — Jaffrey Airfield Silver Ranch
Jaffrey · elev 1,040 ft
- KCON — Concord Municipal
Concord · elev 342 ft
Frequently asked questions
How high does density altitude get at KCNH in summer?
On a typical July afternoon — around 83 °F at the nearest NOAA normals station — density altitude at Claremont Municipal reaches roughly 2,187 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 KCNH on an average day?
It swings with the seasons: from roughly −2,052 ft at the coldest month's average temperature to about 1,394 ft at the warmest month's — all from a constant field elevation of 543 ft. The month-by-month table above carries the full year.
What is the field elevation of Claremont Municipal?
543 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KCNH (ICAO) / CNH (FAA), in Claremont, New Hampshire.