Champaign, Illinois – A smoky haze is hanging over central Illinois this Monday morning, muting the sunshine and reminding residents that Canadian wildfire smoke remains part of today’s weather story. By this afternoon, warmer air and increasing humidity will set the stage for another round of potentially strong thunderstorms that could impact travel across the region.
According to the National Weather Service in Lincoln, patchy smoke will linger through the morning before temperatures climb into the upper 80s, with afternoon heat index values approaching 100 degrees. An Air Quality Alert remains in effect through midnight Monday across much of central Illinois as smoke and ozone levels may reach Unhealthy for Sensitive Groups levels.
Residents with asthma, heart disease, older adults, young children, and anyone planning prolonged outdoor activity should reduce time outside when possible. If you notice coughing, shortness of breath, or irritated eyes, move activities indoors and monitor local air quality updates.
The weather becomes increasingly active later today. According to the National Weather Service, showers and thunderstorms are expected to develop this evening ahead of an approaching cold front. Some storms may become strong to severe, especially north of Interstate 72, where damaging wind gusts and hail are the primary threats. On Tuesday, southeastern Illinois could again see isolated severe storms capable of producing damaging winds, hail around one inch in diameter, and a brief tornado.
Drivers along Interstate 72, Interstate 57, and Interstate 74 should stay alert for rapidly changing conditions during the evening commute. Heavy rain, lightning, and gusty winds could reduce visibility and create hazardous travel. Secure outdoor furniture, charge electronic devices, and make sure weather alerts are enabled before storms arrive.
Conditions improve by Wednesday as cooler, drier air settles into central Illinois. Sunshine returns with afternoon highs in the upper 70s, offering a welcome break after several active days. Longer-range outlooks suggest temperatures may trend above normal later next week, signaling another stretch of midsummer warmth.
Five-Day Forecast for Champaign, Illinois
- Monday: High 87°F. Patchy smoke. Mostly sunny. Thunderstorms likely late.
- Tuesday: High 89°F. Showers and thunderstorms likely, then becoming mostly sunny.
- Wednesday: Sunny. High 77°F.
- Thursday: Sunny. High 79°F.
- Friday: Mostly sunny. High 80°F.
