Madisonville, Texas · field elev 286 ft
Density Altitude at Madisonville Municipal (51R)
Madisonville Municipal sits at 286 ft, and even a typical August afternoon (96 °F) only lifts density altitude to about 2,706 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 | 49.2 | −280 ft | 61.8 | 555 ft |
| February | 53.2 | −12 ft | 65.7 | 808 ft |
| March | 59.7 | 417 ft | 72.4 | 1,238 ft |
| April | 66.5 | 860 ft | 79.1 | 1,661 ft |
| May | 74.0 | 1,340 ft | 85.4 | 2,053 ft |
| June | 80.3 | 1,736 ft | 91.5 | 2,427 ft |
| July | 83.1 | 1,911 ft | 94.7 | 2,622 ft |
| August | 83.6 | 1,942 ft | 96.1 | 2,706 ft |
| September | 78.2 | 1,605 ft | 91.0 | 2,397 ft |
| October | 68.5 | 988 ft | 82.1 | 1,848 ft |
| November | 57.9 | 299 ft | 71.1 | 1,155 ft |
| December | 50.8 | −173 ft | 63.6 | 672 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 51R
DENSITY ALTITUDE
Field elevation 286 ft — the air behaves like 2,700 ft.
- PRESSURE ALT
- 287 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
- KUTS — Huntsville Municipal
Huntsville · elev 363 ft
- KCFD — Coulter Field
Bryan · elev 367 ft
- KCLL — Easterwood Field
College Station · elev 321 ft
- 60R — Navasota Municipal
Navasota · elev 229 ft
- KLHB — Hearne Municipal
Hearne · elev 285 ft
- KDKR — Houston County
Crockett · elev 348 ft
- 33R — Groveton/Trinity County
Groveton · elev 340 ft
- KCXO — Conroe/North Houston Regional
Houston · elev 245 ft
Frequently asked questions
How high does density altitude get at 51R in summer?
On a typical August afternoon — around 96 °F at the nearest NOAA normals station — density altitude at Madisonville Municipal reaches roughly 2,706 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 51R on an average day?
It swings with the seasons: from roughly −280 ft at the coldest month's average temperature to about 1,942 ft at the warmest month's — all from a constant field elevation of 286 ft. The month-by-month table above carries the full year.
What is the field elevation of Madisonville Municipal?
286 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 51R (FAA), in Madisonville, Texas.