Gardner, Massachusetts · field elev 954 ft
Density Altitude at Gardner Municipal (KGDM)
Gardner Municipal sits at 954 ft, and even a typical July afternoon (82 °F) only lifts density altitude to about 2,633 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 | 22.1 | −1,327 ft | 32.1 | −620 ft |
| February | 24.0 | −1,191 ft | 35.3 | −398 ft |
| March | 32.0 | −627 ft | 42.9 | 123 ft |
| April | 44.3 | 218 ft | 56.1 | 1,005 ft |
| May | 55.9 | 992 ft | 67.9 | 1,771 ft |
| June | 64.8 | 1,572 ft | 76.2 | 2,297 ft |
| July | 70.1 | 1,911 ft | 81.6 | 2,633 ft |
| August | 68.1 | 1,784 ft | 80.0 | 2,534 ft |
| September | 60.1 | 1,267 ft | 72.7 | 2,076 ft |
| October | 47.8 | 454 ft | 59.5 | 1,228 ft |
| November | 37.7 | −232 ft | 47.6 | 441 ft |
| December | 28.4 | −880 ft | 37.3 | −260 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 KGDM
DENSITY ALTITUDE
Field elevation 954 ft — the air behaves like 2,658 ft.
- PRESSURE ALT
- 955 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
- KFIT — Fitchburg Municipal
Fitchburg · elev 345 ft
- KORE — Orange Municipal
Orange · elev 556 ft
- 3B3 — Sterling
Sterling · elev 459 ft
- 60M — Spencer
Spencer · elev 1,043 ft
- KORH — Worcester Regional
Worcester · elev 1,009 ft
- 0B5 — Turners Falls
Montague · elev 359 ft
- 6B6 — Minute Man Air Field
Stow · elev 280 ft
- 3B0 — Southbridge Municipal
Southbridge · elev 699 ft
Frequently asked questions
How high does density altitude get at KGDM in summer?
On a typical July afternoon — around 82 °F at the nearest NOAA normals station — density altitude at Gardner Municipal reaches roughly 2,633 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 KGDM on an average day?
It swings with the seasons: from roughly −1,327 ft at the coldest month's average temperature to about 1,911 ft at the warmest month's — all from a constant field elevation of 954 ft. The month-by-month table above carries the full year.
What is the field elevation of Gardner Municipal?
954 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KGDM (ICAO) / GDM (FAA), in Gardner, Massachusetts.