Chehalis, Washington · field elev 177 ft
Density Altitude at Chehalis-Centralia (KCLS)
Chehalis-Centralia sits at 177 ft, and even a typical August afternoon (78 °F) only lifts density altitude to about 1,471 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 | 40.2 | −1,028 ft | 46.1 | −625 ft |
| February | 41.7 | −925 ft | 49.5 | −395 ft |
| March | 45.0 | −699 ft | 54.1 | −87 ft |
| April | 49.3 | −409 ft | 59.5 | 270 ft |
| May | 55.5 | 6 ft | 66.6 | 732 ft |
| June | 60.1 | 309 ft | 71.1 | 1,021 ft |
| July | 65.2 | 641 ft | 77.5 | 1,427 ft |
| August | 65.5 | 661 ft | 78.2 | 1,471 ft |
| September | 60.5 | 335 ft | 72.6 | 1,117 ft |
| October | 51.9 | −234 ft | 61.1 | 374 ft |
| November | 43.9 | −774 ft | 50.7 | −314 ft |
| December | 39.4 | −1,083 ft | 45.0 | −699 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 KCLS
DENSITY ALTITUDE
Field elevation 177 ft — the air behaves like 1,459 ft.
- PRESSURE ALT
- 178 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
- 8W9 — R & K Skyranch
Rochester · elev 149 ft
- KTDO — Ed Carlson Meml Field/South Lewis County
Toledo · elev 374 ft
- KOLM — Olympia Regional
Olympia · elev 208 ft
- 44T — Hoskins Field
Olympia · elev 213 ft
- 39P — Strom Field
Morton · elev 941 ft
- 2W3 — Swanson Field
Eatonville · elev 843 ft
- KKLS — Southwest Washington Regional
Kelso · elev 20 ft
- KSHN — Sanderson Field
Shelton · elev 273 ft
Frequently asked questions
How high does density altitude get at KCLS in summer?
On a typical August afternoon — around 78 °F at the nearest NOAA normals station — density altitude at Chehalis-Centralia reaches roughly 1,471 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 KCLS on an average day?
It swings with the seasons: from roughly −1,083 ft at the coldest month's average temperature to about 661 ft at the warmest month's — all from a constant field elevation of 177 ft. The month-by-month table above carries the full year.
What is the field elevation of Chehalis-Centralia?
177 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KCLS (ICAO) / CLS (FAA), in Chehalis, Washington.