Swans Island, Maine · field elev 100 ft
Density Altitude at Banks (ME5)
Banks sits at 100 ft, and even a typical July afternoon (77 °F) only lifts density altitude to about 1,327 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 | 20.1 | −2,543 ft | 29.5 | −1,871 ft |
| February | 22.2 | −2,392 ft | 32.3 | −1,673 ft |
| March | 31.0 | −1,765 ft | 40.2 | −1,124 ft |
| April | 41.7 | −1,021 ft | 51.5 | −356 ft |
| May | 52.5 | −289 ft | 63.0 | 404 ft |
| June | 61.2 | 286 ft | 71.1 | 927 ft |
| July | 67.4 | 689 ft | 77.4 | 1,327 ft |
| August | 66.7 | 644 ft | 77.0 | 1,301 ft |
| September | 59.3 | 161 ft | 69.3 | 811 ft |
| October | 47.7 | −612 ft | 57.3 | 30 ft |
| November | 37.4 | −1,317 ft | 46.1 | −720 ft |
| December | 27.3 | −2,027 ft | 35.5 | −1,449 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 ME5
DENSITY ALTITUDE
Field elevation 100 ft — the air behaves like 1,301 ft.
- PRESSURE ALT
- 101 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
- 93B — Stonington Municipal
Stonington · elev 32 ft
- KBHB — Hancock County/Bar Harbor
Bar Harbor · elev 83 ft
- 57B — Islesboro
Islesboro · elev 88 ft
- KBST — Belfast Municipal
Belfast · elev 198 ft
- KRKD — Knox County Regional
Rockland · elev 55 ft
- 43B — Deblois Flight Strip
Deblois · elev 218 ft
- 0B2 — Brewer
Brewer · elev 125 ft
- KBGR — Bangor International
Bangor · elev 192 ft
Frequently asked questions
How high does density altitude get at ME5 in summer?
On a typical July afternoon — around 77 °F at the nearest NOAA normals station — density altitude at Banks reaches roughly 1,327 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 ME5 on an average day?
It swings with the seasons: from roughly −2,543 ft at the coldest month's average temperature to about 689 ft at the warmest month's — all from a constant field elevation of 100 ft. The month-by-month table above carries the full year.
What is the field elevation of Banks?
100 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is ME5 (FAA), in Swans Island, Maine.