2026-07-17T22:11:35-05:00 current observations and forecast Chicago, IL https://www.weather.gov/lot https://www.nws.noaa.gov/forecasts/xml/ point1 Chicago/Romeoville, Lewis University Airport, IL Chicago/Romeoville, Lewis University Airport 650 https://forecast.weather.gov/MapClick.php?lat=41.61&lon=-88.1 k-p12h-n14-1 2026-07-17T22:00:00-05:00 2026-07-18T06:00:00-05:00 2026-07-18T18:00:00-05:00 2026-07-19T06:00:00-05:00 2026-07-19T18:00:00-05:00 2026-07-20T06:00:00-05:00 2026-07-20T18:00:00-05:00 2026-07-21T06:00:00-05:00 2026-07-21T18:00:00-05:00 2026-07-22T06:00:00-05:00 2026-07-22T18:00:00-05:00 2026-07-23T06:00:00-05:00 2026-07-23T18:00:00-05:00 2026-07-24T06:00:00-05:00 k-p24h-n7-1 2026-07-17T22:00:00-05:00 2026-07-18T18:00:00-05:00 2026-07-19T18:00:00-05:00 2026-07-20T18:00:00-05:00 2026-07-21T18:00:00-05:00 2026-07-22T18:00:00-05:00 2026-07-23T18:00:00-05:00 k-p24h-n7-2 2026-07-18T06:00:00-05:00 2026-07-19T06:00:00-05:00 2026-07-20T06:00:00-05:00 2026-07-21T06:00:00-05:00 2026-07-22T06:00:00-05:00 2026-07-23T06:00:00-05:00 2026-07-24T06:00:00-05:00 Daily Minimum Temperature 74 66 66 71 63 59 61 Daily Maximum Temperature 90 81 86 87 79 81 82 12 Hourly Probability of Precipitation 70 10 30 60 Weather Type, Coverage, Intensity Conditions Icon https://forecast.weather.gov/newimages/medium/nfew.png https://forecast.weather.gov/DualImage.php?i=sct&j=scttsra&jp=70 https://forecast.weather.gov/DualImage.php?i=hi_ntsra&j=nfu&ip=10 https://forecast.weather.gov/DualImage.php?i=fu&j=few https://forecast.weather.gov/newimages/medium/nfew.png https://forecast.weather.gov/DualImage.php?i=bkn&j=shra&jp=30 https://forecast.weather.gov/newimages/medium/nscttsra60.png https://forecast.weather.gov/newimages/medium/sct.png https://forecast.weather.gov/newimages/medium/nfew.png https://forecast.weather.gov/newimages/medium/few.png https://forecast.weather.gov/newimages/medium/nfew.png https://forecast.weather.gov/newimages/medium/few.png https://forecast.weather.gov/newimages/medium/nsct.png https://forecast.weather.gov/newimages/medium/sct.png Watches, Warnings, and Advisories https://forecast.weather.gov/showsigwx.php?warnzone=ILZ106&warncounty=ILC197&firewxzone=ILZ022&local_place1=Chicago%2FRomeoville%2C+Lewis+University+Airport+IL&product1=Air+Quality+Alert Text Forecast Mostly clear, with a low around 74. Southwest wind 5 to 10 mph, with gusts as high as 15 mph. Showers and thunderstorms likely, mainly between 2pm and 5pm. Some of the storms could produce heavy rainfall. Mostly sunny, with a high near 90. Heat index values as high as 98. West southwest wind 10 to 15 mph becoming north northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible. A 10 percent chance of showers and thunderstorms before 7pm. Patchy smoke after 9pm. Partly cloudy, with a low around 66. Northeast wind 5 to 10 mph, with gusts as high as 15 mph. Patchy smoke before 8am. Sunny, with a high near 81. East northeast wind around 5 mph. Mostly clear, with a low around 66. East southeast wind around 5 mph. A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%. Mostly sunny, with a high near 87. Mostly clear, with a low around 63. Sunny, with a high near 79. Mostly clear, with a low around 59. Sunny, with a high near 81. Partly cloudy, with a low around 61. Mostly sunny, with a high near 82. point1 Lewis University Airport, IL 669 https://www.nws.noaa.gov/data/obhistory/KLOT.html k-p1h-n1-1 2026-07-17T22:35:00-05:00 81 75 84 Weather Type, Coverage, Intensity 10.00 Conditions Icon https://forecast.weather.gov/newimages/medium/nsct.png 230 NA 6 29.97