Sulphur, Oklahoma · field elev 1,071 ft
Density Altitude at Sulphur Municipal (F30)
Sulphur Municipal sits at 1,071 ft, and even a typical August afternoon (94 °F) only lifts density altitude to about 3,503 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 | 39.9 | 64 ft | 51.8 | 866 ft |
| February | 44.2 | 357 ft | 56.3 | 1,163 ft |
| March | 52.8 | 932 ft | 64.8 | 1,716 ft |
| April | 60.7 | 1,450 ft | 72.7 | 2,219 ft |
| May | 69.1 | 1,991 ft | 79.4 | 2,640 ft |
| June | 77.7 | 2,534 ft | 87.8 | 3,157 ft |
| July | 82.2 | 2,813 ft | 93.1 | 3,479 ft |
| August | 81.6 | 2,776 ft | 93.5 | 3,503 ft |
| September | 74.1 | 2,308 ft | 85.8 | 3,035 ft |
| October | 62.6 | 1,574 ft | 75.1 | 2,371 ft |
| November | 51.2 | 826 ft | 63.1 | 1,606 ft |
| December | 42.2 | 221 ft | 53.5 | 978 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 F30
DENSITY ALTITUDE
Field elevation 1,071 ft — the air behaves like 3,533 ft.
- PRESSURE ALT
- 1,072 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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- KADH — Ada Regional
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- 1F0 — Ardmore Downtown Exec
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- 1F4 — Madill Municipal
Madill · elev 890 ft
- 0F9 — Tishomingo Airpark
Tishomingo · elev 647 ft
- F32 — Healdton Municipal
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- 3O3 — Purcell Municipal - Steven E Shephard Field
Purcell · elev 1,143 ft
Frequently asked questions
How high does density altitude get at F30 in summer?
On a typical August afternoon — around 94 °F at the nearest NOAA normals station — density altitude at Sulphur Municipal reaches roughly 3,503 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 F30 on an average day?
It swings with the seasons: from roughly 64 ft at the coldest month's average temperature to about 2,813 ft at the warmest month's — all from a constant field elevation of 1,071 ft. The month-by-month table above carries the full year.
What is the field elevation of Sulphur Municipal?
1,071 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is F30 (FAA), in Sulphur, Oklahoma.