Reedsville, Pennsylvania · field elev 819 ft
Density Altitude at Mifflin County (KRVL)
Mifflin County sits at 819 ft, and even a typical July afternoon (85 °F) only lifts density altitude to about 2,697 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 | 29.0 | −1,006 ft | 37.0 | −449 ft |
| February | 31.4 | −838 ft | 40.4 | −215 ft |
| March | 39.3 | −290 ft | 49.4 | 394 ft |
| April | 50.8 | 487 ft | 62.6 | 1,263 ft |
| May | 60.9 | 1,153 ft | 72.8 | 1,917 ft |
| June | 69.5 | 1,707 ft | 80.7 | 2,413 ft |
| July | 74.0 | 1,993 ft | 85.3 | 2,697 ft |
| August | 72.4 | 1,892 ft | 83.6 | 2,592 ft |
| September | 65.3 | 1,438 ft | 76.8 | 2,169 ft |
| October | 53.7 | 680 ft | 65.0 | 1,419 ft |
| November | 42.8 | −51 ft | 52.6 | 607 ft |
| December | 33.9 | −663 ft | 41.4 | −147 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 KRVL
DENSITY ALTITUDE
Field elevation 819 ft — the air behaves like 2,679 ft.
- PRESSURE ALT
- 820 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
- N16 — Centre Airpark
Centre Hall · elev 1,307 ft
- P34 — Mifflintown
Mifflintown · elev 545 ft
- N74 — Penns Cave
Centre Hall · elev 1,245 ft
- KUNV — State College Regional
State College · elev 1,231 ft
- N96 — Bellefonte
Bellefonte · elev 1,072 ft
- KPSB — Mid-State
Philipsburg · elev 1,948 ft
- KLHV — William T Piper Meml
Lock Haven · elev 556 ft
- 6G6 — Cove Valley
Williamsburg · elev 1,156 ft
Frequently asked questions
How high does density altitude get at KRVL in summer?
On a typical July afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Mifflin County reaches roughly 2,697 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 KRVL on an average day?
It swings with the seasons: from roughly −1,006 ft at the coldest month's average temperature to about 1,993 ft at the warmest month's — all from a constant field elevation of 819 ft. The month-by-month table above carries the full year.
What is the field elevation of Mifflin County?
819 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KRVL (ICAO) / RVL (FAA), in Reedsville, Pennsylvania.