Washington, Pennsylvania · field elev 1,184 ft
Density Altitude at Washington County (KAFJ)
Washington County sits at 1,184 ft, and even a typical July afternoon (83 °F) only lifts density altitude to about 3,025 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 | 28.4 | −592 ft | 36.8 | −8 ft |
| February | 30.9 | −417 ft | 40.1 | 218 ft |
| March | 39.1 | 150 ft | 49.4 | 846 ft |
| April | 51.1 | 959 ft | 62.6 | 1,713 ft |
| May | 60.5 | 1,577 ft | 71.9 | 2,307 ft |
| June | 68.9 | 2,117 ft | 79.8 | 2,802 ft |
| July | 72.6 | 2,352 ft | 83.4 | 3,025 ft |
| August | 71.4 | 2,276 ft | 82.5 | 2,970 ft |
| September | 64.8 | 1,855 ft | 76.1 | 2,572 ft |
| October | 53.4 | 1,112 ft | 64.2 | 1,816 ft |
| November | 42.7 | 395 ft | 51.9 | 1,012 ft |
| December | 33.7 | −222 ft | 41.4 | 307 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 KAFJ
DENSITY ALTITUDE
Field elevation 1,184 ft — the air behaves like 3,000 ft.
- PRESSURE ALT
- 1,185 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 Pennsylvania fields
- 22D — Bandel
Eighty Four · elev 1,210 ft
- G05 — Finleyville Airpark
Finleyville · elev 1,236 ft
- KWAY — Greene County
Waynesburg · elev 1,069 ft
- KAGC — Allegheny County
Pittsburgh · elev 1,252 ft
- KPIT — Pittsburgh International
Pittsburgh · elev 1,203 ft
- KFWQ — Rostraver
Monongahela · elev 1,228 ft
- 31D — Inter County
Irwin · elev 1,250 ft
- KVVS — Joseph A Hardy Connellsville
Connellsville · elev 1,264 ft
Frequently asked questions
How high does density altitude get at KAFJ in summer?
On a typical July afternoon — around 83 °F at the nearest NOAA normals station — density altitude at Washington County reaches roughly 3,025 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 KAFJ on an average day?
It swings with the seasons: from roughly −592 ft at the coldest month's average temperature to about 2,352 ft at the warmest month's — all from a constant field elevation of 1,184 ft. The month-by-month table above carries the full year.
What is the field elevation of Washington County?
1,184 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KAFJ (ICAO) / AFJ (FAA), in Washington, Pennsylvania.