| weather forecast for St Louis Regional Airport | |
| municipality: | Alton/St Louis |
| coordinates: | 38.8903007,-90.045997 |
| IATA code: | ALN |
| ICAO code: | KALN |
| local_code: | ALN |
| GPS code: | KALN |
| elevation: | 544 ft |
 | St Louis Lambert International Airport | ~ 32.18 km |
| St Louis Downtown Airport | ~ 36.80 km |
| Scott AFB/Midamerica Airport | ~ 42.51 km |
| Greenville Airport | ~ 58.27 km |
| Spirit of St Louis Airport | ~ 58.34 km |
| Vandalia Municipal Airport | ~ 76.92 km |
| Sparta Community Hunter Field | ~ 87.80 km |
| Centralia Municipal Airport | ~ 92.77 km |
| Salem–Leckrone Airport | ~ 97.74 km |
