Aberdeen/Amory, Mississippi · field elev 226 ft
Density Altitude at Monroe County (M40)
Monroe County sits at 226 ft, and even a typical July afternoon (90 °F) only lifts density altitude to about 2,287 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 | 41.5 | −878 ft | 52.3 | −147 ft |
| February | 45.1 | −632 ft | 56.7 | 146 ft |
| March | 53.1 | −93 ft | 65.3 | 708 ft |
| April | 60.9 | 422 ft | 73.3 | 1,221 ft |
| May | 69.3 | 966 ft | 81.0 | 1,707 ft |
| June | 76.5 | 1,424 ft | 87.5 | 2,109 ft |
| July | 79.8 | 1,632 ft | 90.4 | 2,287 ft |
| August | 79.1 | 1,588 ft | 89.9 | 2,257 ft |
| September | 73.7 | 1,247 ft | 85.2 | 1,968 ft |
| October | 62.6 | 533 ft | 75.2 | 1,342 ft |
| November | 51.1 | −227 ft | 63.5 | 591 ft |
| December | 43.8 | −720 ft | 54.7 | 13 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 M40
DENSITY ALTITUDE
Field elevation 226 ft — the air behaves like 2,263 ft.
- PRESSURE ALT
- 227 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 Mississippi fields
- 5A4 — Okolona Municipal/Richard Stovall Field
Okolona · elev 337 ft
- M83 — Mccharen Field
West Point · elev 205 ft
- M51 — Oktibbeha
Starkville · elev 250 ft
- KUBS — Columbus-Lowndes County
Columbus · elev 188 ft
- KGTR — Golden Triangle Regional
Columbus/W Point/Starkville · elev 264 ft
- M44 — Houston Municipal
Houston · elev 337 ft
- KTUP — Tupelo Regional
Tupelo · elev 347 ft
- KSTF — George M Bryan
Starkville · elev 333 ft
Frequently asked questions
How high does density altitude get at M40 in summer?
On a typical July afternoon — around 90 °F at the nearest NOAA normals station — density altitude at Monroe County reaches roughly 2,287 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 M40 on an average day?
It swings with the seasons: from roughly −878 ft at the coldest month's average temperature to about 1,632 ft at the warmest month's — all from a constant field elevation of 226 ft. The month-by-month table above carries the full year.
What is the field elevation of Monroe County?
226 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is M40 (FAA), in Aberdeen/Amory, Mississippi.