Claremore, Oklahoma · field elev 580 ft
Density Altitude at Sam Riggs Airpark (K11)
Sam Riggs Airpark sits at 580 ft, and even a typical July afternoon (92 °F) only lifts density altitude to about 2,797 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 | 35.8 | −830 ft | 47.1 | −57 ft |
| February | 40.3 | −519 ft | 52.6 | 312 ft |
| March | 49.2 | 84 ft | 61.2 | 878 ft |
| April | 58.0 | 669 ft | 70.1 | 1,452 ft |
| May | 67.3 | 1,273 ft | 77.9 | 1,946 ft |
| June | 76.4 | 1,851 ft | 86.6 | 2,486 ft |
| July | 81.0 | 2,139 ft | 91.7 | 2,797 ft |
| August | 80.1 | 2,083 ft | 91.7 | 2,797 ft |
| September | 72.1 | 1,579 ft | 83.9 | 2,319 ft |
| October | 60.3 | 819 ft | 72.8 | 1,624 ft |
| November | 48.4 | 31 ft | 60.1 | 806 ft |
| December | 39.0 | −609 ft | 50.0 | 138 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 K11
DENSITY ALTITUDE
Field elevation 580 ft — the air behaves like 2,816 ft.
- PRESSURE ALT
- 581 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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- KGCM — Claremore Regional
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- KTUL — Tulsa International
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- O18 — Buzzards Roost
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- H71 — Mid-America Industrial
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- 2F6 — Skiatook Municipal
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- KRVS — Tulsa Riverside
Tulsa · elev 638 ft
Frequently asked questions
How high does density altitude get at K11 in summer?
On a typical July afternoon — around 92 °F at the nearest NOAA normals station — density altitude at Sam Riggs Airpark reaches roughly 2,797 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 K11 on an average day?
It swings with the seasons: from roughly −830 ft at the coldest month's average temperature to about 2,139 ft at the warmest month's — all from a constant field elevation of 580 ft. The month-by-month table above carries the full year.
What is the field elevation of Sam Riggs Airpark?
580 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is K11 (FAA), in Claremore, Oklahoma.