Celina, Texas · field elev 790 ft
Density Altitude at Four Winds (9S1)
Four Winds sits at 790 ft, and even a typical August afternoon (97 °F) only lifts density altitude to about 3,342 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 | 43.8 | −19 ft | 54.8 | 717 ft |
| February | 47.8 | 251 ft | 59.3 | 1,013 ft |
| March | 56.0 | 796 ft | 68.7 | 1,621 ft |
| April | 63.8 | 1,305 ft | 75.3 | 2,039 ft |
| May | 71.7 | 1,812 ft | 83.0 | 2,520 ft |
| June | 80.5 | 2,365 ft | 91.0 | 3,010 ft |
| July | 84.6 | 2,619 ft | 95.1 | 3,258 ft |
| August | 85.1 | 2,649 ft | 96.5 | 3,342 ft |
| September | 77.2 | 2,159 ft | 88.1 | 2,833 ft |
| October | 66.4 | 1,473 ft | 78.1 | 2,215 ft |
| November | 55.0 | 730 ft | 66.7 | 1,492 ft |
| December | 46.0 | 129 ft | 57.3 | 882 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 9S1
DENSITY ALTITUDE
Field elevation 790 ft — the air behaves like 3,372 ft.
- PRESSURE ALT
- 791 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 Texas fields
- T80 — Bishop'S Landing
Celina · elev 750 ft
- T31 — Aero Country
Mc Kinney · elev 765 ft
- X65 — Txaerosport Aerodrome
Dorchester · elev 855 ft
- T47 — Finney Field
Howe · elev 833 ft
- KTKI — Mckinney Ntl
Dallas · elev 589 ft
- T32 — Sudden Stop
Collinsville · elev 720 ft
- KSWI — Sherman Municipal
Sherman · elev 746 ft
- 6X8 — Vultures Row
Sanger · elev 710 ft
Frequently asked questions
How high does density altitude get at 9S1 in summer?
On a typical August afternoon — around 97 °F at the nearest NOAA normals station — density altitude at Four Winds reaches roughly 3,342 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 9S1 on an average day?
It swings with the seasons: from roughly −19 ft at the coldest month's average temperature to about 2,649 ft at the warmest month's — all from a constant field elevation of 790 ft. The month-by-month table above carries the full year.
What is the field elevation of Four Winds?
790 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 9S1 (FAA), in Celina, Texas.