Rensselaer, Indiana · field elev 698 ft
Density Altitude at Jasper County (KRZL)
Jasper County sits at 698 ft, and even a typical July afternoon (84 °F) only lifts density altitude to about 2,463 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 | 24.0 | −1,512 ft | 32.0 | −947 ft |
| February | 27.9 | −1,235 ft | 36.5 | −634 ft |
| March | 38.4 | −503 ft | 48.1 | 157 ft |
| April | 50.0 | 284 ft | 61.1 | 1,017 ft |
| May | 61.5 | 1,043 ft | 72.3 | 1,737 ft |
| June | 70.9 | 1,648 ft | 81.4 | 2,308 ft |
| July | 73.6 | 1,819 ft | 83.9 | 2,463 ft |
| August | 71.8 | 1,705 ft | 82.5 | 2,377 ft |
| September | 65.2 | 1,283 ft | 77.2 | 2,046 ft |
| October | 52.7 | 464 ft | 64.1 | 1,212 ft |
| November | 40.2 | −379 ft | 49.1 | 224 ft |
| December | 29.5 | −1,122 ft | 37.0 | −599 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 KRZL
DENSITY ALTITUDE
Field elevation 698 ft — the air behaves like 2,469 ft.
- PRESSURE ALT
- 699 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 Indiana fields
- 50I — Kentland Municipal
Kentland · elev 699 ft
- C98 — Lake Village
Lake Village · elev 644 ft
- C97 — Lowell
Lowell · elev 672 ft
- KMCX — White County
Monticello · elev 679 ft
- KRWN — Arens Field
Winamac · elev 708 ft
- KVPZ — Porter County Regional
Valparaiso · elev 770 ft
- KOXI — Starke County
Knox · elev 685 ft
- 1I9 — Delphi Municipal
Delphi · elev 671 ft
Frequently asked questions
How high does density altitude get at KRZL in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at Jasper County reaches roughly 2,463 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 KRZL on an average day?
It swings with the seasons: from roughly −1,512 ft at the coldest month's average temperature to about 1,819 ft at the warmest month's — all from a constant field elevation of 698 ft. The month-by-month table above carries the full year.
What is the field elevation of Jasper County?
698 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KRZL (ICAO) / RZL (FAA), in Rensselaer, Indiana.