South St Paul, Minnesota · field elev 821 ft
Density Altitude at South St Paul Municipal/Richard E Fleming Field (KSGS)
South St Paul Municipal/Richard E Fleming Field sits at 821 ft, and even a typical July afternoon (82 °F) only lifts density altitude to about 2,502 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 | 15.4 | −1,978 ft | 22.7 | −1,451 ft |
| February | 19.6 | −1,673 ft | 28.0 | −1,074 ft |
| March | 31.9 | −800 ft | 40.6 | −199 ft |
| April | 45.7 | 148 ft | 55.6 | 808 ft |
| May | 58.3 | 986 ft | 68.5 | 1,646 ft |
| June | 68.1 | 1,620 ft | 77.8 | 2,234 ft |
| July | 72.5 | 1,900 ft | 82.1 | 2,502 ft |
| August | 70.4 | 1,767 ft | 80.0 | 2,371 ft |
| September | 62.2 | 1,240 ft | 71.9 | 1,862 ft |
| October | 48.2 | 316 ft | 57.3 | 920 ft |
| November | 33.8 | −668 ft | 41.0 | −172 ft |
| December | 21.4 | −1,544 ft | 28.3 | −1,053 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 KSGS
DENSITY ALTITUDE
Field elevation 821 ft — the air behaves like 2,496 ft.
- PRESSURE ALT
- 822 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
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- KMSP — Minneapolis-St Paul International/Wold-Chamberlain
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- 21D — Lake Elmo
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- KLVN — Airlake
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- KFCM — Flying Cloud
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- KMIC — Crystal
Minneapolis · elev 869 ft
- KANE — Anoka County/Blaine (Janes Field)
Minneapolis · elev 912 ft
- KSYN — Stanton Airfield
Stanton · elev 920 ft
Frequently asked questions
How high does density altitude get at KSGS in summer?
On a typical July afternoon — around 82 °F at the nearest NOAA normals station — density altitude at South St Paul Municipal/Richard E Fleming Field reaches roughly 2,502 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 KSGS on an average day?
It swings with the seasons: from roughly −1,978 ft at the coldest month's average temperature to about 1,900 ft at the warmest month's — all from a constant field elevation of 821 ft. The month-by-month table above carries the full year.
What is the field elevation of South St Paul Municipal/Richard E Fleming Field?
821 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KSGS (ICAO) / SGS (FAA), in South St Paul, Minnesota.