Tacoma, Washington · field elev 295 ft
Density Altitude at Tacoma Narrows (KTIW)
Tacoma Narrows sits at 295 ft, and even a typical August afternoon (76 °F) only lifts density altitude to about 1,452 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 | 41.4 | −799 ft | 46.3 | −465 ft |
| February | 42.5 | −723 ft | 48.4 | −323 ft |
| March | 45.8 | −499 ft | 53.1 | −8 ft |
| April | 49.4 | −255 ft | 57.5 | 284 ft |
| May | 55.5 | 152 ft | 64.5 | 741 ft |
| June | 60.2 | 461 ft | 69.7 | 1,076 ft |
| July | 64.7 | 754 ft | 75.5 | 1,446 ft |
| August | 65.0 | 774 ft | 75.6 | 1,452 ft |
| September | 60.5 | 481 ft | 69.6 | 1,070 ft |
| October | 52.2 | −68 ft | 58.6 | 356 ft |
| November | 45.1 | −546 ft | 50.5 | −182 ft |
| December | 40.9 | −833 ft | 45.5 | −519 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 KTIW
DENSITY ALTITUDE
Field elevation 295 ft — the air behaves like 1,477 ft.
- PRESSURE ALT
- 296 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
- 2S1 — Vashon Municipal
Vashon · elev 316 ft
- 3B8 — Shady Acres
Spanaway · elev 445 ft
- S50 — Auburn Municipal
Auburn · elev 63 ft
- KPWT — Bremerton Ntl
Bremerton · elev 444 ft
- KSEA — Seattle-Tacoma International
Seattle · elev 432 ft
- KPLU — Pierce County/Thun Field
Puyallup · elev 538 ft
- KBFI — Boeing Field/King County International
Seattle · elev 22 ft
- 44T — Hoskins Field
Olympia · elev 213 ft
Frequently asked questions
How high does density altitude get at KTIW in summer?
On a typical August afternoon — around 76 °F at the nearest NOAA normals station — density altitude at Tacoma Narrows reaches roughly 1,452 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 KTIW on an average day?
It swings with the seasons: from roughly −833 ft at the coldest month's average temperature to about 774 ft at the warmest month's — all from a constant field elevation of 295 ft. The month-by-month table above carries the full year.
What is the field elevation of Tacoma Narrows?
295 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KTIW (ICAO) / TIW (FAA), in Tacoma, Washington.