Bellingham, Washington · field elev 171 ft
Density Altitude at Bellingham International (KBLI)
Bellingham International sits at 171 ft, and even a typical August afternoon (73 °F) only lifts density altitude to about 1,141 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 | −1,035 ft | 46.3 | −619 ft |
| February | 41.7 | −932 ft | 48.9 | −443 ft |
| March | 45.1 | −700 ft | 52.8 | −181 ft |
| April | 49.6 | −396 ft | 57.7 | 144 ft |
| May | 55.5 | −2 ft | 63.9 | 550 ft |
| June | 59.8 | 282 ft | 67.8 | 802 ft |
| July | 63.9 | 550 ft | 72.7 | 1,116 ft |
| August | 63.9 | 550 ft | 73.1 | 1,141 ft |
| September | 58.9 | 223 ft | 68.1 | 821 ft |
| October | 51.1 | −295 ft | 58.9 | 223 ft |
| November | 44.5 | −741 ft | 51.0 | −302 ft |
| December | 39.8 | −1,063 ft | 45.5 | −673 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 KBLI
DENSITY ALTITUDE
Field elevation 171 ft — the air behaves like 1,135 ft.
- PRESSURE ALT
- 172 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
- 38W — Lynden Municipal/Jansen Field
Lynden · elev 106 ft
- KORS — Orcas Island
Eastsound · elev 35 ft
- 74S — Anacortes
Anacortes · elev 246 ft
- KBVS — Skagit Regional
Burlington/Mount Vernon · elev 145 ft
- 1RL — Point Roberts Airpark
Point Roberts · elev 11 ft
- S31 — Lopez Island
Lopez · elev 209 ft
- KFHR — Friday Harbor
Friday Harbor · elev 113 ft
- 13W — Camano Island Airfield
Stanwood · elev 145 ft
Frequently asked questions
How high does density altitude get at KBLI in summer?
On a typical August afternoon — around 73 °F at the nearest NOAA normals station — density altitude at Bellingham International reaches roughly 1,141 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 KBLI on an average day?
It swings with the seasons: from roughly −1,063 ft at the coldest month's average temperature to about 550 ft at the warmest month's — all from a constant field elevation of 171 ft. The month-by-month table above carries the full year.
What is the field elevation of Bellingham International?
171 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KBLI (ICAO) / BLI (FAA), in Bellingham, Washington.