Middletown, Delaware · field elev 70 ft
Density Altitude at Summit (KEVY)
Summit sits at 70 ft, and even a typical July afternoon (89 °F) only lifts density altitude to about 1,987 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 | 33.8 | −1,606 ft | 42.5 | −1,003 ft |
| February | 35.5 | −1,487 ft | 45.6 | −792 ft |
| March | 43.5 | −935 ft | 54.2 | −213 ft |
| April | 54.5 | −193 ft | 66.9 | 620 ft |
| May | 63.8 | 419 ft | 75.6 | 1,176 ft |
| June | 72.6 | 986 ft | 83.8 | 1,690 ft |
| July | 77.5 | 1,296 ft | 88.6 | 1,987 ft |
| August | 75.7 | 1,182 ft | 86.8 | 1,876 ft |
| September | 68.9 | 749 ft | 79.4 | 1,416 ft |
| October | 57.7 | 19 ft | 69.1 | 761 ft |
| November | 46.4 | −737 ft | 56.9 | −34 ft |
| December | 38.4 | −1,285 ft | 47.0 | −697 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 KEVY
DENSITY ALTITUDE
Field elevation 70 ft — the air behaves like 2,011 ft.
- PRESSURE ALT
- 71 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 Delaware fields
- KILG — New Castle
Wilmington · elev 80 ft
- 38N — Smyrna
Smyrna · elev 18 ft
- 33N — Delaware Airpark
Dover/Cheswold · elev 55 ft
- 0N4 — Chandelle
Dover · elev 22 ft
- 15N — Jenkins
Wyoming · elev 53 ft
- KDOV — Dover AFB
Dover · elev 29 ft
- D74 — Chorman
Farmington · elev 65 ft
- KGED — Delaware Coastal
Georgetown · elev 53 ft
Frequently asked questions
How high does density altitude get at KEVY in summer?
On a typical July afternoon — around 89 °F at the nearest NOAA normals station — density altitude at Summit reaches roughly 1,987 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 KEVY on an average day?
It swings with the seasons: from roughly −1,606 ft at the coldest month's average temperature to about 1,296 ft at the warmest month's — all from a constant field elevation of 70 ft. The month-by-month table above carries the full year.
What is the field elevation of Summit?
70 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KEVY (ICAO) / EVY (FAA), in Middletown, Delaware.