Friendly, Maryland · field elev 118 ft
Density Altitude at Potomac Airfield (KVKX)
Potomac Airfield sits at 118 ft, and even a typical July afternoon (88 °F) only lifts density altitude to about 2,009 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 | 35.5 | −1,427 ft | 43.7 | −861 ft |
| February | 37.9 | −1,260 ft | 47.5 | −603 ft |
| March | 45.4 | −746 ft | 55.8 | −47 ft |
| April | 56.1 | −28 ft | 67.4 | 711 ft |
| May | 65.2 | 569 ft | 75.7 | 1,241 ft |
| June | 74.1 | 1,140 ft | 84.4 | 1,786 ft |
| July | 78.4 | 1,412 ft | 88.0 | 2,009 ft |
| August | 76.9 | 1,317 ft | 86.5 | 1,916 ft |
| September | 70.3 | 897 ft | 80.1 | 1,518 ft |
| October | 58.3 | 118 ft | 68.3 | 769 ft |
| November | 47.8 | −583 ft | 57.2 | 45 ft |
| December | 39.5 | −1,150 ft | 47.8 | −583 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 KVKX
DENSITY ALTITUDE
Field elevation 118 ft — the air behaves like 2,009 ft.
- PRESSURE ALT
- 119 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 Maryland fields
- 2W5 — Maryland
Indian Head · elev 175 ft
- KCGS — College Park
College Park · elev 49 ft
- W00 — Freeway
Bowie · elev 168 ft
- KANP — Lee
Annapolis · elev 34 ft
- KFME — Fort Meade Exec
Fort Meade (Odenton) · elev 150 ft
- KGAI — Montgomery County Airpark
Gaithersburg · elev 539 ft
- KBWI — Baltimore/Washington International Thurgood Marshall
Baltimore · elev 143 ft
- 3W3 — Kentmorr Airpark
Stevensville · elev 10 ft
Frequently asked questions
How high does density altitude get at KVKX in summer?
On a typical July afternoon — around 88 °F at the nearest NOAA normals station — density altitude at Potomac Airfield reaches roughly 2,009 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 KVKX on an average day?
It swings with the seasons: from roughly −1,427 ft at the coldest month's average temperature to about 1,412 ft at the warmest month's — all from a constant field elevation of 118 ft. The month-by-month table above carries the full year.
What is the field elevation of Potomac Airfield?
118 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KVKX (ICAO) / VKX (FAA), in Friendly, Maryland.