Think it’s humid here?  You’re right, but the muggiest weather in the country is across the Midwest, where the dew point was 77° in Omaha and 73° in Chicago at 3 PM!  The high moisture content air is across the “corn belt”.  We see this every year from late-June thru July as the many cornfields in the Midwest transpire A LOT of moisture into the atmosphere.  Neat to see on a national map.