Grandfield, Oklahoma · field elev 1,128 ft
Density Altitude at Grandfield Municipal (1O1)
Grandfield Municipal sits at 1,128 ft, and even a typical July afternoon (98 °F) only lifts density altitude to about 3,812 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 | 41.2 | 224 ft | 53.3 | 1,036 ft |
| February | 45.4 | 508 ft | 57.8 | 1,332 ft |
| March | 53.3 | 1,036 ft | 66.1 | 1,869 ft |
| April | 61.3 | 1,560 ft | 74.2 | 2,384 ft |
| May | 71.6 | 2,220 ft | 84.1 | 3,000 ft |
| June | 81.2 | 2,821 ft | 94.0 | 3,602 ft |
| July | 85.1 | 3,061 ft | 97.5 | 3,812 ft |
| August | 84.0 | 2,994 ft | 96.2 | 3,734 ft |
| September | 76.1 | 2,503 ft | 88.6 | 3,275 ft |
| October | 64.0 | 1,734 ft | 76.1 | 2,503 ft |
| November | 51.6 | 923 ft | 64.0 | 1,734 ft |
| December | 42.7 | 326 ft | 54.4 | 1,108 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 1O1
DENSITY ALTITUDE
Field elevation 1,128 ft — the air behaves like 3,842 ft.
- PRESSURE ALT
- 1,129 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 Oklahoma fields
- 92F — Chattanooga Sky Harbor
Chattanooga · elev 1,135 ft
- KFDR — Frederick Regional
Frederick · elev 1,258 ft
- 3O5 — Walters Municipal
Walters · elev 1,058 ft
- 1O8 — Tipton Municipal
Tipton · elev 1,248 ft
- KLAW — Lawton-Fort Sill Regional
Lawton · elev 1,110 ft
- 4O1 — Snyder
Snyder · elev 1,325 ft
- F09 — Olustee Municipal
Olustee · elev 1,346 ft
- KAXS — Altus/Quartz Mountain Regional
Altus · elev 1,433 ft
Frequently asked questions
How high does density altitude get at 1O1 in summer?
On a typical July afternoon — around 98 °F at the nearest NOAA normals station — density altitude at Grandfield Municipal reaches roughly 3,812 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 1O1 on an average day?
It swings with the seasons: from roughly 224 ft at the coldest month's average temperature to about 3,061 ft at the warmest month's — all from a constant field elevation of 1,128 ft. The month-by-month table above carries the full year.
What is the field elevation of Grandfield Municipal?
1,128 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 1O1 (FAA), in Grandfield, Oklahoma.