CHICAGOLAND DETAILS …
Radar is clear in northern Illinois at about 11:00 a.m. Sunday morning.
Wildfire smoke has again filled in over the region bringing hazy skies and poor air quality. An Air Quality Alert is in effect Sunday, July 19, 2026. The AQI monitor in Northbrook, Illinois detected readings in the “Unhealthy (Red)” category and peaked about midnight Saturday/Sunday with an AQI of 199. After gradually dropping during the early morning hours Sunday, there was an AQI of 133 at 11:00 a.m., which is in the “Unhealthy for Sensitive Groups (Orange)” category.
Hazardous swimming conditions will be found at southern Lake Michigan beaches through at least Sunday morning and possibly stretching into Sunday afternoon.
Strong to severe thunderstorms are possible Monday evening and especially overnight into Tuesday morning.
See also: LIVE STREAMS: Arlingtoncardinal.com/StormChasers
Temperature Outlook …
M 66 87 | T 74 86 | W 63 74 | R 61 82
O’HARE FORECAST …
AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT SUNDAY/MONDAY with coverage area possibly experiencing smoke/PM2.5 to a varying degree and duration Sunday until midnight.
Beach Hazards Statement until Sunday, July 19, 04:00 PM CDT
Sunday: Widespread smoke. Sunny, with a high near 80. East northeast wind around 10 mph.
Sunday Night: Widespread smoke before 1am. Mostly clear, with a low around 66. East northeast wind around 5 mph becoming calm in the evening.
Monday: Increasing clouds, with a high near 87. Southwest wind 5 to 15 mph.
Monday Night: Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 74. Southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Tuesday: A 20 percent chance of showers and thunderstorms before 1pm. Sunny, with a high near 86. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night: Partly cloudy, with a low around 63.
Wednesday: Sunny, with a high near 74.
Wednesday Night: Mostly clear, with a low around 61.
Thursday: Sunny, with a high near 82.
Thursday Night: Partly cloudy, with a low around 65.
Friday: Partly sunny, with a high near 84.
Friday Night: Partly cloudy, with a low around 67.
RADAR • Clouds • Temps • NWS CHGO • UV
PHOENIX FORECAST …
Sunday: Mostly sunny, with a high near 100. Calm wind becoming west southwest around 5 mph in the afternoon.
Sunday Night: A 10 percent chance of showers and thunderstorms, mainly between 10pm and 2am. Partly cloudy, with a low around 85. West northwest wind around 5 mph becoming calm.
Monday: Mostly sunny, with a high near 102. Calm wind becoming west around 5 mph in the afternoon.
Monday Night: A 20 percent chance of showers and thunderstorms after 11pm. Increasing clouds, with a low around 86. West wind around 5 mph becoming calm.
Tuesday: A chance of showers before 11am, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 103. Southwest wind around 5 mph. Chance of precipitation is 30%.
Tuesday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 85. West northwest wind around 5 mph becoming calm.
Wednesday: Sunny, with a high near 105. East wind around 5 mph becoming calm.
Wednesday Night: A 10 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 88. Calm wind becoming east northeast around 5 mph.
Thursday: Mostly sunny, with a high near 108. East wind around 5 mph becoming calm.
Thursday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 87. South southwest wind around 5 mph becoming calm.
Friday: A 10 percent chance of showers and thunderstorms. Mostly sunny, with a high near 107. Calm wind becoming west southwest around 5 mph in the afternoon.
Friday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 88. West southwest wind around 5 mph becoming calm.
RADAR • Clouds • Temps • NWS Phoenix • UV
MIAMI FORECAST …
Sunday Afternoon: A 20 percent chance of showers and thunderstorms after 3pm. Sunny, with a high near 91. Heat index values as high as 105. South wind 11 to 13 mph, with gusts as high as 20 mph.
Sunday Night: A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 82. South wind 7 to 9 mph.
Monday: A 20 percent chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 92. Heat index values as high as 108. South wind 9 to 14 mph, with gusts as high as 21 mph.
Monday Night: Partly cloudy, with a low around 82. Southeast wind 7 to 9 mph.
Tuesday: Mostly sunny, with a high near 92. Southeast wind around 11 mph.
Tuesday Night: Mostly clear, with a low around 81. Southeast wind 5 to 7 mph.
Wednesday: Sunny, with a high near 92. Southeast wind 6 to 10 mph.
Wednesday Night: Mostly clear, with a low around 81. Southeast wind 5 to 8 mph.
Thursday: Sunny, with a high near 92. Light east wind increasing to 5 to 10 mph in the morning.
Thursday Night: Mostly clear, with a low around 81.
Friday: A 20 percent chance of showers and thunderstorms. Sunny, with a high near 92.
Friday Night: A 10 percent chance of showers and thunderstorms. Mostly clear, with a low around 82.
RADAR • Clouds • Temps • NWS Miami • UV
LAX FORECAST …
High Surf Advisory in effect from July 19, 05:00 PM PDT until July 21, 11:00 PM PDT
Sunday: Patchy fog before 11am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 77. West southwest wind 5 to 15 mph.
Sunday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 67. West southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Monday: Patchy fog before 11am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 77. South southeast wind 5 to 15 mph becoming west southwest in the afternoon.
Monday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 68. West southwest wind 5 to 15 mph becoming south southeast after midnight.
Tuesday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 79. South southeast wind 5 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night: Partly cloudy, with a low around 68.
Wednesday: Sunny, with a high near 78.
Wednesday Night: Mostly clear, with a low around 69.
Thursday: Sunny, with a high near 79.
Thursday Night: Mostly clear, with a low around 68.
Friday: Mostly sunny, with a high near 78.
Friday Night: Partly cloudy, with a low around 68.
RADAR • Clouds • Temps • NWS Los Angeles • UV
WASH DC FORECAST …
Sunday Afternoon: Patchy smoke. Mostly sunny, with a high near 87. Northwest wind around 9 mph.
Sunday Night: Partly cloudy, with a low around 68. Light north wind.
Monday: Mostly sunny, with a high near 85. Light and variable wind becoming south around 6 mph in the afternoon.
Monday Night: A chance of showers and thunderstorms after 2am. Increasing clouds, with a low around 70. South wind 3 to 6 mph. Chance of precipitation is 40%.
Tuesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 88. Southwest wind 5 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Tuesday Night: Showers and possibly a thunderstorm. Low around 72. Chance of precipitation is 80%.
Wednesday: Showers likely, with thunderstorms also possible after 11am. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Wednesday Night: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly clear, with a low around 65. Chance of precipitation is 30%.
Thursday: Sunny, with a high near 82.
Thursday Night: Mostly clear, with a low around 64.
Friday: Mostly sunny, with a high near 84.
Friday Night: Partly cloudy, with a low around 67.
Baltimore/Washington DC Forecast
RADAR • Clouds • Temps • NWS Baltimore/Washington • UV
O’Hare Weather Forecast Compared to Phoenix, Miami, LA, Wash DC SUN JUL 19, 2026 10:58 AM SOURCE: National Weather Service local offices.
