Onida, South Dakota · field elev 1,885 ft
Density Altitude at Onida Municipal (98D)
Onida Municipal sits at 1,885 ft, and even a typical July afternoon (87 °F) only lifts density altitude to about 4,123 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 | 16.9 | −531 ft | 26.5 | 151 ft |
| February | 21.0 | −238 ft | 31.0 | 465 ft |
| March | 33.3 | 624 ft | 44.2 | 1,366 ft |
| April | 45.5 | 1,453 ft | 57.8 | 2,265 ft |
| May | 57.1 | 2,219 ft | 69.3 | 3,002 ft |
| June | 67.6 | 2,894 ft | 79.6 | 3,646 ft |
| July | 74.4 | 3,323 ft | 87.4 | 4,123 ft |
| August | 72.0 | 3,172 ft | 85.2 | 3,989 ft |
| September | 63.0 | 2,601 ft | 76.5 | 3,454 ft |
| October | 47.8 | 1,607 ft | 59.7 | 2,388 ft |
| November | 32.9 | 597 ft | 43.3 | 1,306 ft |
| December | 20.7 | −259 ft | 29.9 | 389 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 98D
DENSITY ALTITUDE
Field elevation 1,885 ft — the air behaves like 4,099 ft.
- PRESSURE ALT
- 1,886 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 South Dakota fields
- 0D8 — Gettysburg Municipal
Gettysburg · elev 2,062 ft
- KPIR — Pierre Regional
Pierre · elev 1,744 ft
- 9D0 — Highmore Municipal
Highmore · elev 1,854 ft
- 9F8 — Hoven Municipal
Hoven · elev 1,885 ft
- 3FU — Faulkton Municipal
Faulkton · elev 1,571 ft
- 5P5 — Presho Municipal
Presho · elev 1,760 ft
- 8SD — Bowdle Municipal
Bowdle · elev 1,963 ft
- KMKA — Miller Municipal
Miller · elev 1,570 ft
Frequently asked questions
How high does density altitude get at 98D in summer?
On a typical July afternoon — around 87 °F at the nearest NOAA normals station — density altitude at Onida Municipal reaches roughly 4,123 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 98D on an average day?
It swings with the seasons: from roughly −531 ft at the coldest month's average temperature to about 3,323 ft at the warmest month's — all from a constant field elevation of 1,885 ft. The month-by-month table above carries the full year.
What is the field elevation of Onida Municipal?
1,885 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 98D (FAA), in Onida, South Dakota.