Point Pleasant, West Virginia · field elev 643 ft
Density Altitude at Mason County (3I2)
Mason County sits at 643 ft, and even a typical July afternoon (86 °F) only lifts density altitude to about 2,538 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 | 32.1 | −1,009 ft | 41.0 | −393 ft |
| February | 35.4 | −779 ft | 45.5 | −87 ft |
| March | 43.5 | −222 ft | 54.7 | 529 ft |
| April | 54.4 | 509 ft | 67.1 | 1,337 ft |
| May | 63.8 | 1,124 ft | 75.1 | 1,847 ft |
| June | 72.2 | 1,663 ft | 82.9 | 2,334 ft |
| July | 75.9 | 1,897 ft | 86.2 | 2,538 ft |
| August | 74.9 | 1,834 ft | 85.6 | 2,501 ft |
| September | 68.4 | 1,421 ft | 79.8 | 2,141 ft |
| October | 56.6 | 654 ft | 68.4 | 1,421 ft |
| November | 45.1 | −114 ft | 56.1 | 621 ft |
| December | 36.8 | −682 ft | 45.4 | −94 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 3I2
DENSITY ALTITUDE
Field elevation 643 ft — the air behaves like 2,526 ft.
- PRESSURE ALT
- 644 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 West Virginia fields
- I18 — Jackson County
Ravenswood · elev 758 ft
- 12V — Ona Airpark
Milton · elev 572 ft
- I41 — Robert Newlon Field
Huntington · elev 550 ft
- KUSW — Boggs Field
Spencer · elev 928 ft
- 55I — Slate Run
Spencer · elev 1,001 ft
- KHTS — Tri-State/Milton J Ferguson Field
Huntington · elev 828 ft
- KCRW — West Virginia International Yeager
Charleston · elev 947 ft
- KPKB — Mid-Ohio Valley Regional
Parkersburg · elev 859 ft
Frequently asked questions
How high does density altitude get at 3I2 in summer?
On a typical July afternoon — around 86 °F at the nearest NOAA normals station — density altitude at Mason County reaches roughly 2,538 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 3I2 on an average day?
It swings with the seasons: from roughly −1,009 ft at the coldest month's average temperature to about 1,897 ft at the warmest month's — all from a constant field elevation of 643 ft. The month-by-month table above carries the full year.
What is the field elevation of Mason County?
643 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 3I2 (FAA), in Point Pleasant, West Virginia.