Brunswick, Maine · field elev 75 ft
Density Altitude at Brunswick Exec (KBXM)
Brunswick Exec sits at 75 ft, and even a typical July afternoon (79 °F) only lifts density altitude to about 1,422 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 | 21.0 | −2,510 ft | 30.1 | −1,859 ft |
| February | 23.2 | −2,351 ft | 32.8 | −1,669 ft |
| March | 32.2 | −1,712 ft | 40.9 | −1,107 ft |
| April | 42.6 | −990 ft | 52.8 | −300 ft |
| May | 53.9 | −227 ft | 64.2 | 451 ft |
| June | 63.1 | 379 ft | 72.9 | 1,011 ft |
| July | 69.3 | 780 ft | 79.4 | 1,422 ft |
| August | 68.0 | 697 ft | 77.9 | 1,327 ft |
| September | 60.3 | 196 ft | 70.3 | 845 ft |
| October | 48.5 | −589 ft | 57.9 | 38 ft |
| November | 38.1 | −1,300 ft | 46.7 | −711 ft |
| December | 28.3 | −1,987 ft | 36.8 | −1,390 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 KBXM
DENSITY ALTITUDE
Field elevation 75 ft — the air behaves like 1,397 ft.
- PRESSURE ALT
- 76 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
- 08B — Merrymeeting Field
Bowdoinham · elev 61 ft
- KIWI — Wiscasset
Wiscasset · elev 70 ft
- ME6 — Wales
Wales · elev 210 ft
- KLEW — Auburn/Lewiston Municipal
Auburn/Lewiston · elev 288 ft
- KPWM — Portland International Jetport
Portland · elev 76 ft
- KAUG — Augusta State
Augusta · elev 352 ft
- 81B — Oxford County Regional
Oxford · elev 345 ft
- 98M — Greaton Airfield
Saco · elev 170 ft
Frequently asked questions
How high does density altitude get at KBXM in summer?
On a typical July afternoon — around 79 °F at the nearest NOAA normals station — density altitude at Brunswick Exec reaches roughly 1,422 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 KBXM on an average day?
It swings with the seasons: from roughly −2,510 ft at the coldest month's average temperature to about 780 ft at the warmest month's — all from a constant field elevation of 75 ft. The month-by-month table above carries the full year.
What is the field elevation of Brunswick Exec?
75 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KBXM (ICAO) / BXM (FAA), in Brunswick, Maine.