Burlington, Vermont · field elev 335 ft
Density Altitude at Patrick Leahy Burlington International (KBTV)
Patrick Leahy Burlington International sits at 335 ft, and even a typical July afternoon (82 °F) only lifts density altitude to about 1,927 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 | 20.9 | −2,190 ft | 28.9 | −1,619 ft |
| February | 22.9 | −2,046 ft | 31.5 | −1,436 ft |
| March | 32.3 | −1,379 ft | 40.9 | −783 ft |
| April | 45.6 | −462 ft | 55.3 | 188 ft |
| May | 58.4 | 392 ft | 69.0 | 1,081 ft |
| June | 67.5 | 984 ft | 77.6 | 1,627 ft |
| July | 72.4 | 1,298 ft | 82.4 | 1,927 ft |
| August | 70.7 | 1,190 ft | 80.7 | 1,821 ft |
| September | 62.7 | 674 ft | 72.6 | 1,311 ft |
| October | 50.3 | −145 ft | 58.9 | 425 ft |
| November | 39.3 | −893 ft | 46.4 | −408 ft |
| December | 28.2 | −1,668 ft | 35.0 | −1,191 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 KBTV
DENSITY ALTITUDE
Field elevation 335 ft — the air behaves like 1,902 ft.
- PRESSURE ALT
- 336 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
- VT8 — Shelburne
Shelburne · elev 325 ft
- B06 — Basin Harbor
Vergennes · elev 124 ft
- KMVL — Morrisville-Stowe State
Morrisville · elev 733 ft
- 0B7 — Warren-Sugarbush
Warren · elev 1,470 ft
- KFSO — Franklin County State
Highgate · elev 228 ft
- 6B0 — Middlebury State
Middlebury · elev 494 ft
- KMPV — Edward F Knapp State
Barre/Montpelier · elev 1,166 ft
- KEFK — Northeast Kingdom International
Newport · elev 934 ft
Frequently asked questions
How high does density altitude get at KBTV in summer?
On a typical July afternoon — around 82 °F at the nearest NOAA normals station — density altitude at Patrick Leahy Burlington International reaches roughly 1,927 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 KBTV on an average day?
It swings with the seasons: from roughly −2,190 ft at the coldest month's average temperature to about 1,298 ft at the warmest month's — all from a constant field elevation of 335 ft. The month-by-month table above carries the full year.
What is the field elevation of Patrick Leahy Burlington International?
335 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KBTV (ICAO) / BTV (FAA), in Burlington, Vermont.