Keene, New Hampshire · field elev 488 ft
Density Altitude at Dillant/Hopkins (KEEN)
Dillant/Hopkins sits at 488 ft, and even a typical July afternoon (82 °F) only lifts density altitude to about 2,083 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 | 20.4 | −2,034 ft | 30.4 | −1,322 ft |
| February | 22.8 | −1,861 ft | 34.3 | −1,049 ft |
| March | 31.3 | −1,258 ft | 43.0 | −449 ft |
| April | 43.3 | −429 ft | 56.6 | 463 ft |
| May | 54.8 | 344 ft | 68.6 | 1,243 ft |
| June | 63.8 | 934 ft | 76.9 | 1,770 ft |
| July | 69.0 | 1,269 ft | 81.9 | 2,083 ft |
| August | 67.5 | 1,173 ft | 80.5 | 1,996 ft |
| September | 60.1 | 693 ft | 73.2 | 1,536 ft |
| October | 47.8 | −124 ft | 59.8 | 673 ft |
| November | 36.7 | −882 ft | 46.7 | −198 ft |
| December | 26.7 | −1,583 ft | 35.6 | −958 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 KEEN
DENSITY ALTITUDE
Field elevation 488 ft — the air behaves like 2,089 ft.
- PRESSURE ALT
- 489 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
- KAFN — Jaffrey Airfield Silver Ranch
Jaffrey · elev 1,040 ft
- 8B1 — Hawthorne-Feather Airpark
Hillsboro · elev 600 ft
- KCNH — Claremont Municipal
Claremont · elev 543 ft
- 2B3 — Parlin Field
Newport · elev 784 ft
- KASH — Boire Field
Nashua · elev 200 ft
- KMHT — Manchester Boston Regional
Manchester · elev 266 ft
- KCON — Concord Municipal
Concord · elev 342 ft
- KLEB — Lebanon Municipal
Lebanon · elev 603 ft
Frequently asked questions
How high does density altitude get at KEEN in summer?
On a typical July afternoon — around 82 °F at the nearest NOAA normals station — density altitude at Dillant/Hopkins reaches roughly 2,083 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 KEEN on an average day?
It swings with the seasons: from roughly −2,034 ft at the coldest month's average temperature to about 1,269 ft at the warmest month's — all from a constant field elevation of 488 ft. The month-by-month table above carries the full year.
What is the field elevation of Dillant/Hopkins?
488 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KEEN (ICAO) / EEN (FAA), in Keene, New Hampshire.