Renton, Washington · field elev 32 ft
Density Altitude at Renton Municipal (KRNT)
Renton Municipal sits at 32 ft, and even a typical August afternoon (78 °F) only lifts density altitude to about 1,256 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 | 42.5 | −1,050 ft | 48.0 | −676 ft |
| February | 43.6 | −975 ft | 50.4 | −514 ft |
| March | 47.1 | −737 ft | 54.7 | −227 ft |
| April | 51.3 | −454 ft | 59.5 | 91 ft |
| May | 57.6 | −35 ft | 66.3 | 534 ft |
| June | 62.3 | 274 ft | 71.0 | 837 ft |
| July | 67.3 | 599 ft | 77.2 | 1,231 ft |
| August | 67.5 | 612 ft | 77.6 | 1,256 ft |
| September | 62.4 | 281 ft | 71.6 | 875 ft |
| October | 53.7 | −293 ft | 61.0 | 189 ft |
| November | 46.2 | −798 ft | 52.4 | −380 ft |
| December | 41.8 | −1,098 ft | 47.0 | −744 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 KRNT
DENSITY ALTITUDE
Field elevation 32 ft — the air behaves like 1,281 ft.
- PRESSURE ALT
- 33 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
- KBFI — Boeing Field/King County International
Seattle · elev 22 ft
- KSEA — Seattle-Tacoma International
Seattle · elev 432 ft
- S50 — Auburn Municipal
Auburn · elev 63 ft
- S36 — Crest Airfield
Covington · elev 472 ft
- 2S1 — Vashon Municipal
Vashon · elev 316 ft
- KTIW — Tacoma Narrows
Tacoma · elev 295 ft
- KPWT — Bremerton Ntl
Bremerton · elev 444 ft
- 8W5 — Apex Airpark
Silverdale · elev 525 ft
Frequently asked questions
How high does density altitude get at KRNT in summer?
On a typical August afternoon — around 78 °F at the nearest NOAA normals station — density altitude at Renton Municipal reaches roughly 1,256 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 KRNT on an average day?
It swings with the seasons: from roughly −1,098 ft at the coldest month's average temperature to about 612 ft at the warmest month's — all from a constant field elevation of 32 ft. The month-by-month table above carries the full year.
What is the field elevation of Renton Municipal?
32 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KRNT (ICAO) / RNT (FAA), in Renton, Washington.