Roxboro, North Carolina · field elev 609 ft
Density Altitude at Raleigh Regional At Person County (KTDF)
Raleigh Regional At Person County sits at 609 ft, and even a typical July afternoon (89 °F) only lifts density altitude to about 2,686 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 | 38.8 | −586 ft | 51.2 | 254 ft |
| February | 41.3 | −415 ft | 55.1 | 513 ft |
| March | 48.5 | 73 ft | 62.7 | 1,011 ft |
| April | 58.0 | 704 ft | 72.9 | 1,666 ft |
| May | 66.0 | 1,225 ft | 79.0 | 2,050 ft |
| June | 73.8 | 1,723 ft | 85.9 | 2,478 ft |
| July | 77.8 | 1,975 ft | 89.3 | 2,686 ft |
| August | 76.0 | 1,862 ft | 87.9 | 2,601 ft |
| September | 69.7 | 1,462 ft | 82.2 | 2,249 ft |
| October | 58.8 | 757 ft | 73.0 | 1,672 ft |
| November | 48.4 | 67 ft | 63.0 | 1,031 ft |
| December | 41.6 | −394 ft | 54.6 | 480 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 KTDF
DENSITY ALTITUDE
Field elevation 609 ft — the air behaves like 2,668 ft.
- PRESSURE ALT
- 610 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 North Carolina fields
- 4W4 — Whitfield Farms
Hurdle Mills · elev 653 ft
- 6W4 — Yanceyville Municipal
Yanceyville · elev 648 ft
- KHNZ — Henderson/Oxford
Oxford · elev 526 ft
- KRDU — Raleigh-Durham International
Raleigh/Durham · elev 435 ft
- KBUY — Burlington/Alamance Regional
Burlington · elev 616 ft
- KLHZ — Triangle North Exec
Louisburg · elev 368 ft
- N61 — Hinshaw (Greenacres)
Liberty · elev 750 ft
- N88 — Kecks
Julian · elev 724 ft
Frequently asked questions
How high does density altitude get at KTDF in summer?
On a typical July afternoon — around 89 °F at the nearest NOAA normals station — density altitude at Raleigh Regional At Person County reaches roughly 2,686 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 KTDF on an average day?
It swings with the seasons: from roughly −586 ft at the coldest month's average temperature to about 1,975 ft at the warmest month's — all from a constant field elevation of 609 ft. The month-by-month table above carries the full year.
What is the field elevation of Raleigh Regional At Person County?
609 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KTDF (ICAO) / TDF (FAA), in Roxboro, North Carolina.