Ravenswood, West Virginia · field elev 758 ft
Density Altitude at Jackson County (I18)
Jackson County sits at 758 ft, and even a typical July afternoon (88 °F) only lifts density altitude to about 2,807 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 | 32.8 | −816 ft | 43.7 | −66 ft |
| February | 35.8 | −608 ft | 47.8 | 211 ft |
| March | 43.7 | −66 ft | 57.1 | 829 ft |
| April | 54.7 | 671 ft | 69.8 | 1,651 ft |
| May | 63.9 | 1,273 ft | 77.8 | 2,157 ft |
| June | 71.7 | 1,772 ft | 84.7 | 2,586 ft |
| July | 75.8 | 2,032 ft | 88.3 | 2,807 ft |
| August | 74.3 | 1,937 ft | 87.2 | 2,739 ft |
| September | 68.1 | 1,543 ft | 81.6 | 2,394 ft |
| October | 56.1 | 763 ft | 70.2 | 1,677 ft |
| November | 45.1 | 29 ft | 58.1 | 895 ft |
| December | 37.2 | −511 ft | 47.8 | 211 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 I18
DENSITY ALTITUDE
Field elevation 758 ft — the air behaves like 2,788 ft.
- PRESSURE ALT
- 759 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
- 3I2 — Mason County
Point Pleasant · elev 643 ft
- KUSW — Boggs Field
Spencer · elev 928 ft
- 55I — Slate Run
Spencer · elev 1,001 ft
- KPKB — Mid-Ohio Valley Regional
Parkersburg · elev 859 ft
- 12V — Ona Airpark
Milton · elev 572 ft
- KCRW — West Virginia International Yeager
Charleston · elev 947 ft
- I41 — Robert Newlon Field
Huntington · elev 550 ft
- KHTS — Tri-State/Milton J Ferguson Field
Huntington · elev 828 ft
Frequently asked questions
How high does density altitude get at I18 in summer?
On a typical July afternoon — around 88 °F at the nearest NOAA normals station — density altitude at Jackson County reaches roughly 2,807 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 I18 on an average day?
It swings with the seasons: from roughly −816 ft at the coldest month's average temperature to about 2,032 ft at the warmest month's — all from a constant field elevation of 758 ft. The month-by-month table above carries the full year.
What is the field elevation of Jackson County?
758 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is I18 (FAA), in Ravenswood, West Virginia.