Rock Rapids, Iowa · field elev 1,363 ft
Density Altitude at Rock Rapids Municipal (KRRQ)
Rock Rapids Municipal sits at 1,363 ft, and even a typical July afternoon (85 °F) only lifts density altitude to about 3,323 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 | 15.6 | −1,281 ft | 25.2 | −594 ft |
| February | 20.4 | −935 ft | 30.3 | −235 ft |
| March | 32.7 | −68 ft | 43.2 | 651 ft |
| April | 45.8 | 827 ft | 57.9 | 1,628 ft |
| May | 58.5 | 1,667 ft | 70.3 | 2,425 ft |
| June | 69.5 | 2,375 ft | 80.7 | 3,077 ft |
| July | 73.3 | 2,615 ft | 84.7 | 3,323 ft |
| August | 70.6 | 2,444 ft | 82.3 | 3,176 ft |
| September | 62.4 | 1,920 ft | 75.3 | 2,741 ft |
| October | 48.6 | 1,014 ft | 61.1 | 1,836 ft |
| November | 33.6 | −6 ft | 44.2 | 719 ft |
| December | 21.2 | −878 ft | 30.3 | −235 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 KRRQ
DENSITY ALTITUDE
Field elevation 1,363 ft — the air behaves like 3,342 ft.
- PRESSURE ALT
- 1,364 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 Iowa fields
- 2VA — Zangger Vintage Airpark
Larchwood · elev 1,478 ft
- KISB — Sibley Municipal
Sibley · elev 1,538 ft
- KSHL — Sheldon Regional
Sheldon · elev 1,419 ft
- KSXK — Sioux County Regional
Maurice · elev 1,409 ft
- 1Y9 — Paullina Municipal
Paullina · elev 1,385 ft
- KLRJ — Le Mars Municipal
Le Mars · elev 1,197 ft
- 4D8 — Fuller
Milford · elev 1,439 ft
- 0F3 — Spirit Lake Municipal
Spirit Lake · elev 1,434 ft
Frequently asked questions
How high does density altitude get at KRRQ in summer?
On a typical July afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Rock Rapids Municipal reaches roughly 3,323 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 KRRQ on an average day?
It swings with the seasons: from roughly −1,281 ft at the coldest month's average temperature to about 2,615 ft at the warmest month's — all from a constant field elevation of 1,363 ft. The month-by-month table above carries the full year.
What is the field elevation of Rock Rapids Municipal?
1,363 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KRRQ (ICAO) / RRQ (FAA), in Rock Rapids, Iowa.