Robinson, Illinois · field elev 461 ft
Density Altitude at Crawford County (KRSV)
Crawford County sits at 461 ft, and even a typical July afternoon (87 °F) only lifts density altitude to about 2,334 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 | 30.6 | −1,341 ft | 38.4 | −798 ft |
| February | 35.0 | −1,034 ft | 43.5 | −449 ft |
| March | 44.6 | −374 ft | 54.4 | 284 ft |
| April | 55.6 | 363 ft | 66.6 | 1,081 ft |
| May | 65.7 | 1,023 ft | 76.1 | 1,687 ft |
| June | 73.8 | 1,541 ft | 84.1 | 2,186 ft |
| July | 76.4 | 1,706 ft | 86.5 | 2,334 ft |
| August | 74.8 | 1,605 ft | 85.7 | 2,285 ft |
| September | 68.3 | 1,191 ft | 80.4 | 1,956 ft |
| October | 57.0 | 456 ft | 68.4 | 1,197 ft |
| November | 44.2 | −401 ft | 53.6 | 231 ft |
| December | 34.8 | −1,048 ft | 42.1 | −544 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 KRSV
DENSITY ALTITUDE
Field elevation 461 ft — the air behaves like 2,365 ft.
- PRESSURE ALT
- 462 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 Illinois fields
- KLWV — Lawrenceville-Vincennes International
Lawrenceville · elev 430 ft
- 1H8 — Casey Municipal
Casey · elev 655 ft
- KAJG — Mount Carmel Municipal
Mount Carmel · elev 429 ft
- KOLY — Olney-Noble
Olney-Noble · elev 482 ft
- KMTO — Coles County Meml
Mattoon/Charleston · elev 722 ft
- KPRG — Edgar County
Paris · elev 654 ft
- 1H2 — Effingham County Regional
Effingham · elev 585 ft
- 2T2 — Percival Springs
Watson · elev 552 ft
Frequently asked questions
How high does density altitude get at KRSV in summer?
On a typical July afternoon — around 87 °F at the nearest NOAA normals station — density altitude at Crawford County reaches roughly 2,334 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 KRSV on an average day?
It swings with the seasons: from roughly −1,341 ft at the coldest month's average temperature to about 1,706 ft at the warmest month's — all from a constant field elevation of 461 ft. The month-by-month table above carries the full year.
What is the field elevation of Crawford County?
461 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KRSV (ICAO) / RSV (FAA), in Robinson, Illinois.