Mount Airy, North Carolina · field elev 1,269 ft
Density Altitude at Mount Airy/Surry County (KMWK)
Mount Airy/Surry County sits at 1,269 ft, and even a typical July afternoon (86 °F) only lifts density altitude to about 3,307 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 | 35.9 | 36 ft | 47.0 | 791 ft |
| February | 38.7 | 228 ft | 50.7 | 1,038 ft |
| March | 45.5 | 690 ft | 58.4 | 1,545 ft |
| April | 54.6 | 1,296 ft | 68.5 | 2,196 ft |
| May | 63.2 | 1,856 ft | 76.0 | 2,669 ft |
| June | 71.0 | 2,355 ft | 83.1 | 3,110 ft |
| July | 74.8 | 2,594 ft | 86.3 | 3,307 ft |
| August | 73.5 | 2,512 ft | 85.0 | 3,227 ft |
| September | 67.5 | 2,132 ft | 79.3 | 2,875 ft |
| October | 56.5 | 1,420 ft | 69.9 | 2,285 ft |
| November | 45.9 | 717 ft | 59.3 | 1,603 ft |
| December | 38.7 | 228 ft | 49.9 | 984 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 KMWK
DENSITY ALTITUDE
Field elevation 1,269 ft — the air behaves like 3,288 ft.
- PRESSURE ALT
- 1,270 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
- KZEF — Elkin Municipal
Elkin · elev 1,067 ft
- N63 — Meadow Brook Field
Walnut Cove · elev 647 ft
- 78A — Swan Creek
Jonesville · elev 1,137 ft
- 80C — Lone Hickory
Yadkinville · elev 1,015 ft
- KINT — Smith Reynolds
Winston Salem · elev 969 ft
- KUKF — Wilkes County
North Wilkesboro · elev 1,303 ft
- N83 — Ds Butler Farm And Airfield
Oak Ridge · elev 950 ft
- 8A7 — Twin Lakes
Mocksville · elev 818 ft
Frequently asked questions
How high does density altitude get at KMWK in summer?
On a typical July afternoon — around 86 °F at the nearest NOAA normals station — density altitude at Mount Airy/Surry County reaches roughly 3,307 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 KMWK on an average day?
It swings with the seasons: from roughly 36 ft at the coldest month's average temperature to about 2,594 ft at the warmest month's — all from a constant field elevation of 1,269 ft. The month-by-month table above carries the full year.
What is the field elevation of Mount Airy/Surry County?
1,269 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KMWK (ICAO) / MWK (FAA), in Mount Airy, North Carolina.