Manchester, New Hampshire · field elev 266 ft
Density Altitude at Manchester Boston Regional (KMHT)
Manchester Boston Regional sits at 266 ft, and even a typical July afternoon (84 °F) only lifts density altitude to about 1,948 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 | 25.6 | −1,940 ft | 34.1 | −1,340 ft |
| February | 28.2 | −1,755 ft | 37.4 | −1,110 ft |
| March | 36.5 | −1,173 ft | 45.6 | −548 ft |
| April | 48.2 | −372 ft | 58.9 | 340 ft |
| May | 58.9 | 340 ft | 70.1 | 1,066 ft |
| June | 68.1 | 938 ft | 78.7 | 1,612 ft |
| July | 73.8 | 1,302 ft | 84.1 | 1,948 ft |
| August | 72.2 | 1,201 ft | 82.4 | 1,843 ft |
| September | 64.3 | 693 ft | 74.6 | 1,353 ft |
| October | 52.2 | −104 ft | 62.1 | 550 ft |
| November | 41.5 | −828 ft | 50.0 | −251 ft |
| December | 31.4 | −1,529 ft | 39.3 | −979 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 KMHT
DENSITY ALTITUDE
Field elevation 266 ft — the air behaves like 1,942 ft.
- PRESSURE ALT
- 267 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
- KASH — Boire Field
Nashua · elev 200 ft
- KCON — Concord Municipal
Concord · elev 342 ft
- 8B1 — Hawthorne-Feather Airpark
Hillsboro · elev 600 ft
- KAFN — Jaffrey Airfield Silver Ranch
Jaffrey · elev 1,040 ft
- 7B3 — Hampton Airfield
Hampton · elev 93 ft
- KPSM — Portsmouth International At Pease
Portsmouth · elev 100 ft
- KDAW — Skyhaven
Rochester · elev 322 ft
- KEEN — Dillant/Hopkins
Keene · elev 488 ft
Frequently asked questions
How high does density altitude get at KMHT in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at Manchester Boston Regional reaches roughly 1,948 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 KMHT on an average day?
It swings with the seasons: from roughly −1,940 ft at the coldest month's average temperature to about 1,302 ft at the warmest month's — all from a constant field elevation of 266 ft. The month-by-month table above carries the full year.
What is the field elevation of Manchester Boston Regional?
266 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KMHT (ICAO) / MHT (FAA), in Manchester, New Hampshire.