Springfield, Vermont · field elev 578 ft
Density Altitude at Hartness State (Springfield) (KVSF)
Hartness State (Springfield) sits at 578 ft, and even a typical July afternoon (81 °F) only lifts density altitude to about 2,162 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 | 20.5 | −1,914 ft | 29.8 | −1,251 ft |
| February | 22.9 | −1,741 ft | 33.1 | −1,020 ft |
| March | 31.6 | −1,125 ft | 41.9 | −412 ft |
| April | 43.8 | −283 ft | 55.7 | 515 ft |
| May | 55.5 | 501 ft | 68.1 | 1,322 ft |
| June | 64.2 | 1,070 ft | 76.3 | 1,843 ft |
| July | 69.3 | 1,399 ft | 81.4 | 2,162 ft |
| August | 67.5 | 1,283 ft | 79.7 | 2,056 ft |
| September | 59.8 | 784 ft | 71.8 | 1,558 ft |
| October | 47.7 | −19 ft | 58.7 | 712 ft |
| November | 37.0 | −749 ft | 46.3 | −113 ft |
| December | 26.7 | −1,470 ft | 35.0 | −888 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 KVSF
DENSITY ALTITUDE
Field elevation 578 ft — the air behaves like 2,137 ft.
- PRESSURE ALT
- 579 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 Vermont fields
- KRUT — Rutland/Southern Vermont Regional
Rutland · elev 787 ft
- 4V8 — Deerfield Valley Regional
West Dover · elev 1,953 ft
- 2B9 — Post Mills
Post Mills · elev 696 ft
- KDDH — William H Morse State
Bennington · elev 827 ft
- 6B0 — Middlebury State
Middlebury · elev 494 ft
- 0B7 — Warren-Sugarbush
Warren · elev 1,470 ft
- KMPV — Edward F Knapp State
Barre/Montpelier · elev 1,166 ft
- B06 — Basin Harbor
Vergennes · elev 124 ft
Frequently asked questions
How high does density altitude get at KVSF in summer?
On a typical July afternoon — around 81 °F at the nearest NOAA normals station — density altitude at Hartness State (Springfield) reaches roughly 2,162 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 KVSF on an average day?
It swings with the seasons: from roughly −1,914 ft at the coldest month's average temperature to about 1,399 ft at the warmest month's — all from a constant field elevation of 578 ft. The month-by-month table above carries the full year.
What is the field elevation of Hartness State (Springfield)?
578 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KVSF (ICAO) / VSF (FAA), in Springfield, Vermont.