Ritzville, Washington · field elev 1,801 ft
Density Altitude at Pru Field (33S)
Pru Field sits at 1,801 ft, and even a typical July afternoon (87 °F) only lifts density altitude to about 3,979 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 | 29.8 | 277 ft | 35.8 | 692 ft |
| February | 33.9 | 561 ft | 41.8 | 1,100 ft |
| March | 40.4 | 1,006 ft | 51.0 | 1,715 ft |
| April | 46.7 | 1,430 ft | 59.7 | 2,285 ft |
| May | 55.2 | 1,992 ft | 69.1 | 2,886 ft |
| June | 61.5 | 2,401 ft | 76.2 | 3,332 ft |
| July | 70.1 | 2,950 ft | 86.7 | 3,979 ft |
| August | 69.7 | 2,924 ft | 86.1 | 3,942 ft |
| September | 61.4 | 2,394 ft | 76.6 | 3,357 ft |
| October | 49.0 | 1,583 ft | 61.5 | 2,401 ft |
| November | 36.9 | 767 ft | 45.2 | 1,329 ft |
| December | 29.3 | 242 ft | 35.2 | 651 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 33S
DENSITY ALTITUDE
Field elevation 1,801 ft — the air behaves like 3,997 ft.
- PRESSURE ALT
- 1,802 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 Washington fields
- 0S0 — Lind
Lind · elev 1,507 ft
- 43D — Odessa Municipal
Odessa · elev 1,738 ft
- 2S4 — Warden
Warden · elev 1,276 ft
- 68S — Davenport
Davenport · elev 2,424 ft
- 5W1 — Wilson Creek
Wilson Creek · elev 1,430 ft
- S70 — Othello Municipal
Othello · elev 1,149 ft
- W20 — Moses Lake Municipal
Moses Lake · elev 1,203 ft
- W09 — Lower Monumental State
Kahlotus · elev 813 ft
Frequently asked questions
How high does density altitude get at 33S in summer?
On a typical July afternoon — around 87 °F at the nearest NOAA normals station — density altitude at Pru Field reaches roughly 3,979 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 33S on an average day?
It swings with the seasons: from roughly 242 ft at the coldest month's average temperature to about 2,950 ft at the warmest month's — all from a constant field elevation of 1,801 ft. The month-by-month table above carries the full year.
What is the field elevation of Pru Field?
1,801 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 33S (FAA), in Ritzville, Washington.