Harrison, Michigan · field elev 1,142 ft
Density Altitude at Clare County (80D)
Clare County sits at 1,142 ft, and even a typical July afternoon (82 °F) only lifts density altitude to about 2,881 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 | 19.5 | −1,277 ft | 28.4 | −644 ft |
| February | 20.9 | −1,177 ft | 31.6 | −420 ft |
| March | 29.6 | −560 ft | 41.8 | 282 ft |
| April | 41.8 | 282 ft | 54.4 | 1,126 ft |
| May | 54.0 | 1,099 ft | 67.8 | 1,995 ft |
| June | 63.6 | 1,726 ft | 77.7 | 2,620 ft |
| July | 67.6 | 1,982 ft | 81.9 | 2,881 ft |
| August | 65.7 | 1,861 ft | 80.0 | 2,764 ft |
| September | 57.7 | 1,342 ft | 72.2 | 2,275 ft |
| October | 46.4 | 593 ft | 58.5 | 1,395 ft |
| November | 35.3 | −163 ft | 44.3 | 451 ft |
| December | 25.8 | −828 ft | 33.5 | −288 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 80D
DENSITY ALTITUDE
Field elevation 1,142 ft — the air behaves like 2,887 ft.
- PRESSURE ALT
- 1,143 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
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- AIR DENSITY
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- 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 Michigan fields
- 48D — Clare Municipal
Clare · elev 856 ft
- KGDW — Gladwin Zettel Meml
Gladwin · elev 774 ft
- 5Y2 — Houghton Lake State
Houghton Lake Heights · elev 1,165 ft
- 5M6 — Sugar Springs Airpark
Gladwin · elev 953 ft
- MI1 — Denton Farms
Clare · elev 851 ft
- KHTL — Roscommon County/Blodgett Meml
Houghton Lake · elev 1,150 ft
- D11 — Ojibwa Airpark
Weidman · elev 959 ft
- Y91 — Home Acres Sky Ranch
Lake City · elev 1,246 ft
Frequently asked questions
How high does density altitude get at 80D in summer?
On a typical July afternoon — around 82 °F at the nearest NOAA normals station — density altitude at Clare County reaches roughly 2,881 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 80D on an average day?
It swings with the seasons: from roughly −1,277 ft at the coldest month's average temperature to about 1,982 ft at the warmest month's — all from a constant field elevation of 1,142 ft. The month-by-month table above carries the full year.
What is the field elevation of Clare County?
1,142 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 80D (FAA), in Harrison, Michigan.