Dupo, IL Weather Forecast
St. Clair County, Illinois
Live radar, warnings and storm tracking for Dupo, with free alerts the moment it counts.
The next few hours
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
Free alerts for Dupo
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Dupo, IL at a glance
Dupo is home to about 3,821 people in St. Clair County, across 6.4 square miles. It ranks 379th by population of 441 places in Illinois with a forecast here. The nearest neighbour with its own forecast is Columbia, 4 miles away.
- County
- St. Clair County
- Population
- 3,821 2023 est.
- Land area
- 6.4 sq mi
- People per sq mi
- 597
- Forecast point
- 38.5161°N, 90.2176°W
How well can the network see Dupo?
The nearest Doppler radar is KLSX (St. Louis, MO), to the WNW. Its lowest scan passes about 1,700 ft above Dupo. That is about as close as US radar coverage gets: low-level rotation and gust fronts over Dupo show up clearly. Dupo is closer to its radar than 73% of US cities.
The closest weather station is KCPS (St Louis/Downtown Arpt). Close enough that its readings are the conditions in town.
Forecasts near Dupo
- Columbia, IL4 mi
- Cahokia Heights, IL5 mi
- Green Park, MO7 mi
- Shrewsbury, MO8 mi
- Millstadt, IL8 mi
- East St. Louis, IL8 mi
- St. Louis, MO8 mi
- Maplewood, MO9 mi
Elsewhere in Illinois
ChicagoAuroraJolietNapervilleRockfordElginAll Illinois forecasts →