Alexandria, Indiana · field elev 900 ft
Density Altitude at Alexandria (I99)
Alexandria sits at 900 ft, and even a typical July afternoon (84 °F) only lifts density altitude to about 2,703 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 | 27.8 | −989 ft | 34.9 | −493 ft |
| February | 31.5 | −730 ft | 39.3 | −190 ft |
| March | 41.2 | −60 ft | 50.0 | 534 ft |
| April | 52.5 | 701 ft | 62.7 | 1,370 ft |
| May | 62.8 | 1,376 ft | 72.7 | 2,010 ft |
| June | 71.4 | 1,928 ft | 81.1 | 2,536 ft |
| July | 74.3 | 2,111 ft | 83.8 | 2,703 ft |
| August | 72.8 | 2,016 ft | 82.4 | 2,617 ft |
| September | 66.2 | 1,595 ft | 76.6 | 2,256 ft |
| October | 54.9 | 860 ft | 64.7 | 1,499 ft |
| November | 42.8 | 49 ft | 50.8 | 588 ft |
| December | 32.7 | −646 ft | 39.4 | −183 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 I99
DENSITY ALTITUDE
Field elevation 900 ft — the air behaves like 2,716 ft.
- PRESSURE ALT
- 901 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 Indiana fields
- KAID — Anderson Regional
Anderson · elev 919 ft
- KMIE — Delaware County Regional
Muncie · elev 937 ft
- 7I2 — Reese
Muncie · elev 991 ft
- KMZZ — Marion Municipal - Mckinney Field
Marion · elev 859 ft
- I80 — Noblesville
Noblesville · elev 830 ft
- 1I8 — Converse
Converse · elev 840 ft
- KUWL — New Castle Henry County Marlatt Field
New Castle · elev 1,090 ft
- KUMP — Indianapolis Metro
Indianapolis · elev 811 ft
Frequently asked questions
How high does density altitude get at I99 in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at Alexandria reaches roughly 2,703 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 I99 on an average day?
It swings with the seasons: from roughly −989 ft at the coldest month's average temperature to about 2,111 ft at the warmest month's — all from a constant field elevation of 900 ft. The month-by-month table above carries the full year.
What is the field elevation of Alexandria?
900 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is I99 (FAA), in Alexandria, Indiana.