Frankfort, Michigan · field elev 633 ft
Density Altitude at Frankfort Dow Meml Field (KFKS)
Frankfort Dow Meml Field sits at 633 ft, and even a typical July afternoon (77 °F) only lifts density altitude to about 1,979 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 | 23.6 | −1,622 ft | 28.6 | −1,267 ft |
| February | 24.8 | −1,537 ft | 30.6 | −1,126 ft |
| March | 32.5 | −993 ft | 39.5 | −508 ft |
| April | 43.2 | −255 ft | 51.8 | 324 ft |
| May | 54.4 | 497 ft | 63.9 | 1,119 ft |
| June | 64.0 | 1,125 ft | 73.4 | 1,727 ft |
| July | 68.9 | 1,440 ft | 77.4 | 1,979 ft |
| August | 68.3 | 1,402 ft | 76.1 | 1,897 ft |
| September | 61.4 | 956 ft | 69.0 | 1,447 ft |
| October | 49.6 | 177 ft | 56.2 | 616 ft |
| November | 38.4 | −584 ft | 43.9 | −208 ft |
| December | 28.9 | −1,246 ft | 33.6 | −916 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 KFKS
DENSITY ALTITUDE
Field elevation 633 ft — the air behaves like 1,954 ft.
- PRESSURE ALT
- 634 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
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Interlochen · elev 866 ft
- KMBL — Manistee County/Blacker
Manistee · elev 621 ft
- 4Y9 — Eagles Landing
Harrietta · elev 993 ft
- KTVC — Cherry Capital
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- KCAD — Wexford County
Cadillac · elev 1,307 ft
Frequently asked questions
How high does density altitude get at KFKS in summer?
On a typical July afternoon — around 77 °F at the nearest NOAA normals station — density altitude at Frankfort Dow Meml Field reaches roughly 1,979 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 KFKS on an average day?
It swings with the seasons: from roughly −1,622 ft at the coldest month's average temperature to about 1,440 ft at the warmest month's — all from a constant field elevation of 633 ft. The month-by-month table above carries the full year.
What is the field elevation of Frankfort Dow Meml Field?
633 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KFKS (ICAO) / FKS (FAA), in Frankfort, Michigan.