Charleston, Missouri · field elev 313 ft
Density Altitude at Mississippi County (KCHQ)
Mississippi County sits at 313 ft, and even a typical July afternoon (91 °F) only lifts density altitude to about 2,454 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 | 36.0 | −1,149 ft | 44.2 | −585 ft |
| February | 39.9 | −879 ft | 49.2 | −247 ft |
| March | 48.9 | −267 ft | 59.2 | 418 ft |
| April | 59.6 | 444 ft | 70.6 | 1,156 ft |
| May | 69.9 | 1,111 ft | 80.5 | 1,782 ft |
| June | 78.3 | 1,644 ft | 88.8 | 2,295 ft |
| July | 81.0 | 1,813 ft | 91.4 | 2,454 ft |
| August | 79.3 | 1,707 ft | 90.3 | 2,387 ft |
| September | 72.0 | 1,246 ft | 83.9 | 1,993 ft |
| October | 60.7 | 516 ft | 72.6 | 1,284 ft |
| November | 48.6 | −287 ft | 58.4 | 365 ft |
| December | 39.8 | −886 ft | 47.7 | −348 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 KCHQ
DENSITY ALTITUDE
Field elevation 313 ft — the air behaves like 2,430 ft.
- PRESSURE ALT
- 314 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 Missouri fields
- KSIK — Sikeston Meml Municipal
Sikeston · elev 315 ft
- KEIW — County Meml
New Madrid · elev 296 ft
- KCGI — Cape Girardeau Regional
Cape Girardeau · elev 342 ft
- KDXE — Dexter Municipal
Dexter · elev 304 ft
- KMAW — Malden Regional
Malden · elev 295 ft
- M85 — Gideon Meml
Gideon · elev 269 ft
- 34M — Campbell Municipal
Campbell · elev 284 ft
- M28 — Mid Continent
Hayti · elev 268 ft
Frequently asked questions
How high does density altitude get at KCHQ in summer?
On a typical July afternoon — around 91 °F at the nearest NOAA normals station — density altitude at Mississippi County reaches roughly 2,454 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 KCHQ on an average day?
It swings with the seasons: from roughly −1,149 ft at the coldest month's average temperature to about 1,813 ft at the warmest month's — all from a constant field elevation of 313 ft. The month-by-month table above carries the full year.
What is the field elevation of Mississippi County?
313 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KCHQ (ICAO) / CHQ (FAA), in Charleston, Missouri.