Frederick, Maryland · field elev 309 ft
Density Altitude at Frederick Municipal (KFDK)
Frederick Municipal sits at 309 ft, and even a typical July afternoon (89 °F) only lifts density altitude to about 2,278 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 | 34.8 | −1,237 ft | 43.1 | −665 ft |
| February | 38.2 | −1,001 ft | 47.8 | −346 ft |
| March | 45.5 | −502 ft | 55.3 | 156 ft |
| April | 56.7 | 248 ft | 68.6 | 1,023 ft |
| May | 66.2 | 869 ft | 77.4 | 1,582 ft |
| June | 74.2 | 1,380 ft | 85.2 | 2,069 ft |
| July | 78.5 | 1,652 ft | 88.6 | 2,278 ft |
| August | 76.5 | 1,526 ft | 86.7 | 2,161 ft |
| September | 69.7 | 1,094 ft | 80.0 | 1,746 ft |
| October | 58.0 | 334 ft | 68.8 | 1,036 ft |
| November | 47.1 | −393 ft | 56.3 | 222 ft |
| December | 38.9 | −953 ft | 47.1 | −393 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 KFDK
DENSITY ALTITUDE
Field elevation 309 ft — the air behaves like 2,303 ft.
- PRESSURE ALT
- 310 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
- W50 — Davis
Laytonsville · elev 609 ft
- 2W2 — Clearview Airpark
Westminster · elev 799 ft
- KGAI — Montgomery County Airpark
Gaithersburg · elev 539 ft
- KDMW — Carroll County Regional/Jack B Poage Field
Westminster · elev 789 ft
- KHGR — Hagerstown Regional/Richard A Henson Field
Hagerstown · elev 703 ft
- KCGS — College Park
College Park · elev 49 ft
- KFME — Fort Meade Exec
Fort Meade (Odenton) · elev 150 ft
- KBWI — Baltimore/Washington International Thurgood Marshall
Baltimore · elev 143 ft
Frequently asked questions
How high does density altitude get at KFDK in summer?
On a typical July afternoon — around 89 °F at the nearest NOAA normals station — density altitude at Frederick Municipal reaches roughly 2,278 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 KFDK on an average day?
It swings with the seasons: from roughly −1,237 ft at the coldest month's average temperature to about 1,652 ft at the warmest month's — all from a constant field elevation of 309 ft. The month-by-month table above carries the full year.
What is the field elevation of Frederick Municipal?
309 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KFDK (ICAO) / FDK (FAA), in Frederick, Maryland.