Baltimore, Maryland · field elev 22 ft
Density Altitude at Martin State (KMTN)
Martin State sits at 22 ft, and even a typical July afternoon (90 °F) only lifts density altitude to about 2,020 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 | 36.9 | −1,449 ft | 43.7 | −981 ft |
| February | 39.4 | −1,276 ft | 46.8 | −770 ft |
| March | 46.9 | −763 ft | 55.2 | −206 ft |
| April | 57.5 | −54 ft | 66.8 | 554 ft |
| May | 67.0 | 567 ft | 75.9 | 1,136 ft |
| June | 76.6 | 1,180 ft | 85.4 | 1,731 ft |
| July | 81.5 | 1,488 ft | 90.1 | 2,020 ft |
| August | 79.1 | 1,338 ft | 87.3 | 1,848 ft |
| September | 72.5 | 920 ft | 80.4 | 1,420 ft |
| October | 60.7 | 157 ft | 68.8 | 683 ft |
| November | 50.1 | −547 ft | 57.6 | −47 ft |
| December | 41.3 | −1,145 ft | 48.0 | −689 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 KMTN
DENSITY ALTITUDE
Field elevation 22 ft — the air behaves like 2,014 ft.
- PRESSURE ALT
- 23 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 Maryland fields
- W48 — Essex Skypark
Baltimore · elev 14 ft
- W42 — Fallston
Fallston · elev 460 ft
- KBWI — Baltimore/Washington International Thurgood Marshall
Baltimore · elev 143 ft
- 0W3 — Harford County
Churchville · elev 412 ft
- W29 — Bay Bridge
Stevensville · elev 15 ft
- KFME — Fort Meade Exec
Fort Meade (Odenton) · elev 150 ft
- KANP — Lee
Annapolis · elev 34 ft
- 3W3 — Kentmorr Airpark
Stevensville · elev 10 ft
Frequently asked questions
How high does density altitude get at KMTN in summer?
On a typical July afternoon — around 90 °F at the nearest NOAA normals station — density altitude at Martin State reaches roughly 2,020 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 KMTN on an average day?
It swings with the seasons: from roughly −1,449 ft at the coldest month's average temperature to about 1,488 ft at the warmest month's — all from a constant field elevation of 22 ft. The month-by-month table above carries the full year.
What is the field elevation of Martin State?
22 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KMTN (ICAO) / MTN (FAA), in Baltimore, Maryland.