Sanford, Maine · field elev 244 ft
Density Altitude at Sanford Seacoast Regional (KSFM)
Sanford Seacoast Regional sits at 244 ft, and even a typical July afternoon (81 °F) only lifts density altitude to about 1,747 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 | 20.8 | −2,312 ft | 31.7 | −1,535 ft |
| February | 23.3 | −2,132 ft | 35.3 | −1,284 ft |
| March | 31.7 | −1,535 ft | 43.5 | −718 ft |
| April | 43.6 | −712 ft | 56.8 | 175 ft |
| May | 54.3 | 9 ft | 67.8 | 892 ft |
| June | 63.3 | 601 ft | 76.2 | 1,427 ft |
| July | 68.7 | 950 ft | 81.3 | 1,747 ft |
| August | 67.4 | 866 ft | 80.3 | 1,685 ft |
| September | 59.9 | 379 ft | 72.8 | 1,212 ft |
| October | 48.1 | −406 ft | 60.5 | 418 ft |
| November | 37.5 | −1,131 ft | 48.2 | −400 ft |
| December | 27.3 | −1,846 ft | 37.2 | −1,152 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 KSFM
DENSITY ALTITUDE
Field elevation 244 ft — the air behaves like 1,729 ft.
- PRESSURE ALT
- 245 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 Maine fields
- B19 — Biddeford Municipal
Biddeford · elev 157 ft
- 98M — Greaton Airfield
Saco · elev 170 ft
- 63B — Limington-Harmon
Limington · elev 292 ft
- KPWM — Portland International Jetport
Portland · elev 76 ft
- KIZG — White Mountain Regional
Fryeburg · elev 455 ft
- KLEW — Auburn/Lewiston Municipal
Auburn/Lewiston · elev 288 ft
- KBXM — Brunswick Exec
Brunswick · elev 75 ft
- 81B — Oxford County Regional
Oxford · elev 345 ft
Frequently asked questions
How high does density altitude get at KSFM in summer?
On a typical July afternoon — around 81 °F at the nearest NOAA normals station — density altitude at Sanford Seacoast Regional reaches roughly 1,747 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 KSFM on an average day?
It swings with the seasons: from roughly −2,312 ft at the coldest month's average temperature to about 950 ft at the warmest month's — all from a constant field elevation of 244 ft. The month-by-month table above carries the full year.
What is the field elevation of Sanford Seacoast Regional?
244 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KSFM (ICAO) / SFM (FAA), in Sanford, Maine.