Metropolis, Illinois · field elev 384 ft
Density Altitude at Metropolis Municipal (M30)
Metropolis Municipal sits at 384 ft, and even a typical July afternoon (89 °F) only lifts density altitude to about 2,370 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 | 34.1 | −1,192 ft | 43.0 | −578 ft |
| February | 37.8 | −935 ft | 47.6 | −266 ft |
| March | 46.9 | −314 ft | 57.6 | 400 ft |
| April | 57.6 | 400 ft | 69.0 | 1,141 ft |
| May | 66.7 | 993 ft | 77.4 | 1,674 ft |
| June | 75.0 | 1,523 ft | 85.4 | 2,173 ft |
| July | 78.4 | 1,737 ft | 88.6 | 2,370 ft |
| August | 77.2 | 1,662 ft | 88.0 | 2,333 ft |
| September | 70.3 | 1,224 ft | 82.0 | 1,962 ft |
| October | 58.8 | 479 ft | 70.9 | 1,263 ft |
| November | 46.6 | −334 ft | 57.2 | 374 ft |
| December | 37.9 | −929 ft | 46.7 | −327 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 M30
DENSITY ALTITUDE
Field elevation 384 ft — the air behaves like 2,394 ft.
- PRESSURE ALT
- 385 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 Illinois fields
- KCIR — Cairo Regional
Cairo · elev 322 ft
- KMWA — Veterans Airport Of Southern Illinois
Marion · elev 472 ft
- KHSB — Harrisburg-Raleigh
Harrisburg · elev 398 ft
- KMDH — Southern Illinois
Carbondale/Murphysboro · elev 411 ft
- H96 — Benton Municipal
Benton · elev 444 ft
- KPJY — Pinckneyville/Du Quoin
Pinckneyville · elev 400 ft
- KCUL — Carmi Municipal
Carmi · elev 388 ft
- KMVN — Mount Vernon
Mount Vernon · elev 480 ft
Frequently asked questions
How high does density altitude get at M30 in summer?
On a typical July afternoon — around 89 °F at the nearest NOAA normals station — density altitude at Metropolis Municipal reaches roughly 2,370 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 M30 on an average day?
It swings with the seasons: from roughly −1,192 ft at the coldest month's average temperature to about 1,737 ft at the warmest month's — all from a constant field elevation of 384 ft. The month-by-month table above carries the full year.
What is the field elevation of Metropolis Municipal?
384 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is M30 (FAA), in Metropolis, Illinois.