Pottsville, Pennsylvania · field elev 1,730 ft
Density Altitude at Schuylkill County/Joe Zerbey (KZER)
Schuylkill County/Joe Zerbey sits at 1,730 ft, and even a typical July afternoon (80 °F) only lifts density altitude to about 3,494 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 | 25.0 | −148 ft | 32.5 | 376 ft |
| February | 26.3 | −57 ft | 34.8 | 535 ft |
| March | 34.4 | 507 ft | 43.8 | 1,147 ft |
| April | 47.0 | 1,362 ft | 57.4 | 2,048 ft |
| May | 57.0 | 2,022 ft | 67.4 | 2,691 ft |
| June | 65.9 | 2,596 ft | 75.9 | 3,227 ft |
| July | 70.4 | 2,882 ft | 80.2 | 3,494 ft |
| August | 68.1 | 2,736 ft | 77.9 | 3,351 ft |
| September | 62.0 | 2,346 ft | 72.1 | 2,989 ft |
| October | 50.8 | 1,614 ft | 60.3 | 2,236 ft |
| November | 39.2 | 836 ft | 47.7 | 1,409 ft |
| December | 29.9 | 195 ft | 37.0 | 686 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 KZER
DENSITY ALTITUDE
Field elevation 1,730 ft — the air behaves like 3,481 ft.
- PRESSURE ALT
- 1,731 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
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- AIR DENSITY
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- 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
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- 8N1 — Grimes
Bethel · elev 582 ft
- 9N7 — Farmers Pride
Fredericksburg · elev 495 ft
- N13 — Bloomsburg Municipal
Bloomsburg · elev 481 ft
- 8N8 — Danville
Danville · elev 559 ft
- 9D4 — Deck
Myerstown · elev 523 ft
- 71N — Sunbury
Sunbury · elev 450 ft
Frequently asked questions
How high does density altitude get at KZER in summer?
On a typical July afternoon — around 80 °F at the nearest NOAA normals station — density altitude at Schuylkill County/Joe Zerbey reaches roughly 3,494 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 KZER on an average day?
It swings with the seasons: from roughly −148 ft at the coldest month's average temperature to about 2,882 ft at the warmest month's — all from a constant field elevation of 1,730 ft. The month-by-month table above carries the full year.
What is the field elevation of Schuylkill County/Joe Zerbey?
1,730 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KZER (ICAO) / ZER (FAA), in Pottsville, Pennsylvania.