Fertile, Minnesota · field elev 1,137 ft
Density Altitude at Fertile Municipal (D14)
Fertile Municipal sits at 1,137 ft, and even a typical July afternoon (79 °F) only lifts density altitude to about 2,664 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 | 6.3 | −2,249 ft | 15.2 | −1,594 ft |
| February | 11.4 | −1,872 ft | 21.3 | −1,154 ft |
| March | 24.8 | −905 ft | 34.4 | −232 ft |
| April | 40.9 | 215 ft | 51.9 | 954 ft |
| May | 54.6 | 1,133 ft | 66.0 | 1,874 ft |
| June | 63.8 | 1,732 ft | 74.2 | 2,395 ft |
| July | 68.1 | 2,008 ft | 78.5 | 2,664 ft |
| August | 66.5 | 1,906 ft | 78.1 | 2,639 ft |
| September | 57.9 | 1,349 ft | 69.2 | 2,078 ft |
| October | 43.9 | 418 ft | 53.5 | 1,060 ft |
| November | 26.8 | −763 ft | 34.1 | −253 ft |
| December | 13.6 | −1,711 ft | 21.5 | −1,140 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 D14
DENSITY ALTITUDE
Field elevation 1,137 ft — the air behaves like 2,695 ft.
- PRESSURE ALT
- 1,138 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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- KCKN — Crookston Municipal/Kirkwood Field
Crookston · elev 897 ft
- 3N8 — Mahnomen County
Mahnomen · elev 1,246 ft
- KTVF — Thief River Falls Regional
Thief River Falls · elev 1,119 ft
- 7Y4 — Bagley Municipal
Bagley · elev 1,503 ft
- 04Y — Hawley Municipal
Hawley · elev 1,210 ft
Frequently asked questions
How high does density altitude get at D14 in summer?
On a typical July afternoon — around 79 °F at the nearest NOAA normals station — density altitude at Fertile Municipal reaches roughly 2,664 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 D14 on an average day?
It swings with the seasons: from roughly −2,249 ft at the coldest month's average temperature to about 2,008 ft at the warmest month's — all from a constant field elevation of 1,137 ft. The month-by-month table above carries the full year.
What is the field elevation of Fertile Municipal?
1,137 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is D14 (FAA), in Fertile, Minnesota.