Hanson, Massachusetts · field elev 71 ft
Density Altitude at Cranland (28M)
Cranland sits at 71 ft, and even a typical July afternoon (84 °F) only lifts density altitude to about 1,704 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 | 31.4 | −1,773 ft | 41.0 | −1,105 ft |
| February | 33.0 | −1,660 ft | 42.8 | −981 ft |
| March | 39.0 | −1,243 ft | 49.1 | −553 ft |
| April | 48.8 | −574 ft | 59.2 | 119 ft |
| May | 58.5 | 73 ft | 69.1 | 763 ft |
| June | 68.3 | 711 ft | 78.5 | 1,360 ft |
| July | 74.0 | 1,076 ft | 84.0 | 1,704 ft |
| August | 72.7 | 993 ft | 82.3 | 1,598 ft |
| September | 66.3 | 582 ft | 75.7 | 1,184 ft |
| October | 55.6 | −119 ft | 65.4 | 524 ft |
| November | 45.8 | −777 ft | 55.1 | −152 ft |
| December | 37.1 | −1,374 ft | 45.9 | −770 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 28M
DENSITY ALTITUDE
Field elevation 71 ft — the air behaves like 1,704 ft.
- PRESSURE ALT
- 72 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 Massachusetts fields
- KPYM — Plymouth Municipal
Plymouth · elev 148 ft
- KGHG — Marshfield Municipal - George Harlow Field
Marshfield · elev 9 ft
- KTAN — Taunton Municipal/King Field
Taunton · elev 41 ft
- 1M8 — Myricks
Berkley · elev 73 ft
- 1B9 — Mansfield Municipal
Mansfield · elev 123 ft
- KOWD — Norwood Meml
Norwood · elev 49 ft
- KEWB — New Bedford Regional
New Bedford · elev 79 ft
- KBOS — General Edward Lawrence Logan International
Boston · elev 19 ft
Frequently asked questions
How high does density altitude get at 28M in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at Cranland reaches roughly 1,704 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 28M on an average day?
It swings with the seasons: from roughly −1,773 ft at the coldest month's average temperature to about 1,076 ft at the warmest month's — all from a constant field elevation of 71 ft. The month-by-month table above carries the full year.
What is the field elevation of Cranland?
71 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 28M (FAA), in Hanson, Massachusetts.