Rockwall, Texas · field elev 574 ft
Density Altitude at Ralph M Hall/Rockwall Municipal (F46)
Ralph M Hall/Rockwall Municipal sits at 574 ft, and even a typical August afternoon (93 °F) only lifts density altitude to about 2,887 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 | 44.0 | −274 ft | 53.7 | 377 ft |
| February | 48.2 | 10 ft | 58.2 | 674 ft |
| March | 55.7 | 510 ft | 65.1 | 1,124 ft |
| April | 63.2 | 1,001 ft | 73.0 | 1,629 ft |
| May | 71.4 | 1,528 ft | 80.2 | 2,082 ft |
| June | 79.3 | 2,026 ft | 88.3 | 2,583 ft |
| July | 82.8 | 2,244 ft | 92.4 | 2,833 ft |
| August | 83.1 | 2,262 ft | 93.3 | 2,887 ft |
| September | 76.3 | 1,838 ft | 86.7 | 2,484 ft |
| October | 65.8 | 1,169 ft | 76.7 | 1,863 ft |
| November | 54.6 | 437 ft | 64.7 | 1,098 ft |
| December | 46.1 | −132 ft | 56.1 | 536 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 F46
DENSITY ALTITUDE
Field elevation 574 ft — the air behaves like 2,869 ft.
- PRESSURE ALT
- 575 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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Dallas · elev 644 ft
Frequently asked questions
How high does density altitude get at F46 in summer?
On a typical August afternoon — around 93 °F at the nearest NOAA normals station — density altitude at Ralph M Hall/Rockwall Municipal reaches roughly 2,887 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 F46 on an average day?
It swings with the seasons: from roughly −274 ft at the coldest month's average temperature to about 2,262 ft at the warmest month's — all from a constant field elevation of 574 ft. The month-by-month table above carries the full year.
What is the field elevation of Ralph M Hall/Rockwall Municipal?
574 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is F46 (FAA), in Rockwall, Texas.