Cahokia, Illinois — live current conditions, hourly and 7-day forecasts, NWS alerts, aviation weather, radar and satellite imagery for Cahokia, St. Clair County.
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Cahokia lies in a landscape shaped by ancient waters and the persistent sweep of the prairie wind. It lies 3.9 miles south of Saint Louis, MO (from Saint Louis, MO: bearing 174°T), and is situated 3.9 miles south of St. Louis. Low-lying ground, sometimes prone to the Mississippi's embrace, gives way to gentle rises that would have offered vantage points to those who first walked this earth. The air here often carries the scent of damp earth and distant industrial hum, a subtle counterpoint to the vast, open sky that stretches overhead, especially potent in the pale, washed light of late afternoon. The terrain, a mosaic of fertile bottomlands and slightly elevated terraces, speaks of a place where water has always been a defining force, carving and depositing, shaping the very character of the land. This is a place with deep roots, where echoes of a vanished civilization linger in the very soil. Cahokia was once the heart of a vast Indigenous metropolis, a center of trade and ceremony that predates European arrival by centuries. Later, the fertile lands attracted settlers drawn to agriculture, and for a time, the rhythm of life here was dictated by the planting and harvesting of crops. Today, the local economy is a more complex affair, a blend of industry and the ongoing legacy of its historical significance, attracting visitors keen to explore the remnants of its remarkable past and understand the enduring connection between this land and its ancient inhabitants.
| Location | Cahokia, St. Clair County, Illinois |
| Coordinates | 38.570885°N, 90.190111°W |
| Timezone | Central Time (America/Chicago) |
| ZIP Code(s) | 62206 |
| Area Code | 217 |
| Page generated | June 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |