Collinsville, Illinois — live current conditions, hourly and 7-day forecasts, NWS alerts, aviation weather, radar and satellite imagery for Collinsville, Madison County.
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Collinsville unfolds across a landscape of gentle, rolling terrain, where the wide Illinois sky seems to press down with a steady, benevolent weight. It lies 6.7 miles north-west of O'Fallon, IL (from O'Fallon, IL: bearing 324°T), and is situated 6.8 miles north-west of O Fallon. Here, the earth, a rich, dark loam, yields readily to cultivation, bordered by the occasional cluster of mature oak and maple trees that offer a welcome, dappled shade. The air, especially in the late afternoon, carries the faint, earthy scent of turned soil and distant, ripening corn, a subtle perfume that speaks of the agricultural heart of this place. The streets of Collinsville themselves possess a comfortable, unpretentious order, a grid laid out with a practical hand, leading the eye toward the horizon where the land continues its patient, unhurried spread. The very foundations of Collinsville are rooted in the deep veins of coal that once pulsed beneath this ground, a history that shaped its early identity and the hardy character of its people. Though the mines have long since fallen silent, their legacy remains, a quiet hum in the town's collective memory, an understanding of hard work and resilience. Today, Collinsville’s economy is more diverse, drawing strength from its proximity to larger urban centers and its own thriving local businesses, from diners serving hearty breakfasts to specialized shops that cater to the needs of the surrounding agricultural communities. The iconic Cahokia Mounds State Historic Site, a UNESCO World Heritage Site, stands as a profound reminder of the ancient peoples who once inhabited this land, offering a breathtaking glimpse into a civilization that predates written history, a stark and beautiful contrast to the more recent narrative of industry and settlement that defines Collinsville.
| Location | Collinsville, Madison County, Illinois |
| Coordinates | 38.670327°N, 89.984548°W |
| Timezone | Central Time (America/Chicago) |
| ZIP Code(s) | 62234 |
| Area Code | 217 |
| Page generated | June 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |