Fairfield, Iowa · field elev 801 ft
Density Altitude at Fairfield Municipal (KFFL)
Fairfield Municipal sits at 801 ft, and even a typical July afternoon (84 °F) only lifts density altitude to about 2,607 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 | 22.1 | −1,519 ft | 30.6 | −916 ft |
| February | 26.6 | −1,198 ft | 35.6 | −568 ft |
| March | 38.3 | −382 ft | 48.5 | 311 ft |
| April | 50.4 | 438 ft | 61.9 | 1,196 ft |
| May | 60.5 | 1,105 ft | 71.3 | 1,800 ft |
| June | 70.0 | 1,717 ft | 80.5 | 2,378 ft |
| July | 73.8 | 1,958 ft | 84.2 | 2,607 ft |
| August | 71.9 | 1,838 ft | 82.6 | 2,508 ft |
| September | 64.4 | 1,358 ft | 76.1 | 2,103 ft |
| October | 52.0 | 545 ft | 62.8 | 1,254 ft |
| November | 38.7 | −354 ft | 47.8 | 264 ft |
| December | 27.6 | −1,127 ft | 35.4 | −582 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 KFFL
DENSITY ALTITUDE
Field elevation 801 ft — the air behaves like 2,595 ft.
- PRESSURE ALT
- 802 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 Iowa fields
- KAWG — Washington Municipal
Washington · elev 754 ft
- 6K9 — Keosauqua Municipal
Keosauqua · elev 580 ft
- KOTM — Ottumwa Regional
Ottumwa · elev 846 ft
- KMPZ — Mount Pleasant Municipal
Mount Pleasant · elev 731 ft
- KOOA — Oskaloosa Municipal
Oskaloosa · elev 840 ft
- 4K6 — Bloomfield Municipal
Bloomfield · elev 888 ft
- 4C8 — Albia Municipal
Albia · elev 964 ft
- KFSW — Fort Madison Municipal
Fort Madison · elev 722 ft
Frequently asked questions
How high does density altitude get at KFFL in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at Fairfield Municipal reaches roughly 2,607 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 KFFL on an average day?
It swings with the seasons: from roughly −1,519 ft at the coldest month's average temperature to about 1,958 ft at the warmest month's — all from a constant field elevation of 801 ft. The month-by-month table above carries the full year.
What is the field elevation of Fairfield Municipal?
801 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KFFL (ICAO) / FFL (FAA), in Fairfield, Iowa.