Purcell, Oklahoma · field elev 1,143 ft
Density Altitude at Purcell Municipal - Steven E Shephard Field (3O3)
Purcell Municipal - Steven E Shephard Field sits at 1,143 ft, and even a typical July afternoon (94 °F) only lifts density altitude to about 3,645 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 | 39.2 | 106 ft | 52.2 | 981 ft |
| February | 44.2 | 446 ft | 57.6 | 1,337 ft |
| March | 52.8 | 1,021 ft | 65.8 | 1,868 ft |
| April | 60.7 | 1,539 ft | 73.9 | 2,383 ft |
| May | 69.0 | 2,073 ft | 81.0 | 2,827 ft |
| June | 77.7 | 2,622 ft | 88.6 | 3,294 ft |
| July | 82.3 | 2,907 ft | 94.4 | 3,645 ft |
| August | 81.3 | 2,845 ft | 94.1 | 3,626 ft |
| September | 73.7 | 2,371 ft | 85.7 | 3,116 ft |
| October | 63.1 | 1,695 ft | 76.3 | 2,534 ft |
| November | 50.7 | 882 ft | 63.1 | 1,695 ft |
| December | 41.7 | 276 ft | 53.6 | 1,074 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 3O3
DENSITY ALTITUDE
Field elevation 1,143 ft — the air behaves like 3,620 ft.
- PRESSURE ALT
- 1,144 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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Lindsay · elev 968 ft
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Norman · elev 1,182 ft
- KPVJ — Pauls Valley Municipal
Pauls Valley · elev 971 ft
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Oklahoma City · elev 1,296 ft
- KCHK — Chickasha Municipal
Chickasha · elev 1,152 ft
- KSNL — Shawnee Regional
Shawnee · elev 1,073 ft
Frequently asked questions
How high does density altitude get at 3O3 in summer?
On a typical July afternoon — around 94 °F at the nearest NOAA normals station — density altitude at Purcell Municipal - Steven E Shephard Field reaches roughly 3,645 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 3O3 on an average day?
It swings with the seasons: from roughly 106 ft at the coldest month's average temperature to about 2,907 ft at the warmest month's — all from a constant field elevation of 1,143 ft. The month-by-month table above carries the full year.
What is the field elevation of Purcell Municipal - Steven E Shephard Field?
1,143 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 3O3 (FAA), in Purcell, Oklahoma.