Backus, Minnesota · field elev 1,353 ft
Density Altitude at Backus Municipal (7Y3)
Backus Municipal sits at 1,353 ft, and even a typical July afternoon (80 °F) only lifts density altitude to about 3,009 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 | 9.7 | −1,725 ft | 18.8 | −1,063 ft |
| February | 14.9 | −1,344 ft | 25.4 | −592 ft |
| March | 28.3 | −388 ft | 38.2 | 299 ft |
| April | 41.8 | 544 ft | 52.4 | 1,254 ft |
| May | 55.3 | 1,445 ft | 66.3 | 2,158 ft |
| June | 64.8 | 2,062 ft | 75.0 | 2,710 ft |
| July | 69.3 | 2,350 ft | 79.8 | 3,009 ft |
| August | 67.0 | 2,203 ft | 77.6 | 2,872 ft |
| September | 58.3 | 1,642 ft | 68.3 | 2,286 ft |
| October | 45.1 | 767 ft | 54.1 | 1,366 ft |
| November | 30.0 | −269 ft | 36.9 | 210 ft |
| December | 17.6 | −1,149 ft | 24.8 | −634 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 7Y3
DENSITY ALTITUDE
Field elevation 1,353 ft — the air behaves like 3,021 ft.
- PRESSURE ALT
- 1,354 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 Minnesota fields
- KPWC — Pine River Regional
Pine River · elev 1,296 ft
- KXVG — Longville Municipal
Longville · elev 1,337 ft
- Y49 — Walker Municipal
Walker · elev 1,348 ft
- KPKD — Park Rapids Municipal/Konshok Field
Park Rapids · elev 1,445 ft
- 9Y2 — East Gull Lake
East Gull Lake · elev 1,236 ft
- 52Y — Remer Municipal
Remer · elev 1,350 ft
- KSAZ — Staples Municipal
Staples · elev 1,288 ft
- KBRD — Brainerd Lakes Regional
Brainerd · elev 1,232 ft
Frequently asked questions
How high does density altitude get at 7Y3 in summer?
On a typical July afternoon — around 80 °F at the nearest NOAA normals station — density altitude at Backus Municipal reaches roughly 3,009 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 7Y3 on an average day?
It swings with the seasons: from roughly −1,725 ft at the coldest month's average temperature to about 2,350 ft at the warmest month's — all from a constant field elevation of 1,353 ft. The month-by-month table above carries the full year.
What is the field elevation of Backus Municipal?
1,353 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 7Y3 (FAA), in Backus, Minnesota.