Monticello, New York · field elev 1,403 ft
Density Altitude at Sullivan County International (KMSV)
Sullivan County International sits at 1,403 ft, and even a typical July afternoon (79 °F) only lifts density altitude to about 3,014 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 | 21.8 | −785 ft | 30.4 | −178 ft |
| February | 23.7 | −650 ft | 33.2 | 17 ft |
| March | 31.4 | −108 ft | 41.3 | 572 ft |
| April | 43.5 | 721 ft | 54.6 | 1,461 ft |
| May | 54.2 | 1,435 ft | 65.7 | 2,181 ft |
| June | 62.9 | 2,002 ft | 73.7 | 2,689 ft |
| July | 68.0 | 2,328 ft | 78.9 | 3,014 ft |
| August | 66.0 | 2,201 ft | 77.1 | 2,902 ft |
| September | 59.2 | 1,762 ft | 70.1 | 2,462 ft |
| October | 47.8 | 1,010 ft | 58.3 | 1,703 ft |
| November | 37.5 | 313 ft | 46.7 | 937 ft |
| December | 27.5 | −381 ft | 35.2 | 155 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 KMSV
DENSITY ALTITUDE
Field elevation 1,403 ft — the air behaves like 3,020 ft.
- PRESSURE ALT
- 1,404 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 New York fields
- N82 — Wurtsboro/Sullivan County
Wurtsboro · elev 548 ft
- N89 — Joseph Y Resnick
Ellenville · elev 290 ft
- 06N — Randall
Middletown · elev 523 ft
- KMGJ — Orange County
Montgomery · elev 370 ft
- N45 — Kobelt
Wallkill · elev 420 ft
- KSWF — New York Stewart International
New York · elev 491 ft
- N72 — Warwick Municipal
Warwick · elev 540 ft
- 20N — Kingston-Ulster
Kingston · elev 147 ft
Frequently asked questions
How high does density altitude get at KMSV in summer?
On a typical July afternoon — around 79 °F at the nearest NOAA normals station — density altitude at Sullivan County International reaches roughly 3,014 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 KMSV on an average day?
It swings with the seasons: from roughly −785 ft at the coldest month's average temperature to about 2,328 ft at the warmest month's — all from a constant field elevation of 1,403 ft. The month-by-month table above carries the full year.
What is the field elevation of Sullivan County International?
1,403 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KMSV (ICAO) / MSV (FAA), in Monticello, New York.