A Case of Dew Point Inflation?

There have been occasions this spring/summer where a few forecasters have rather casually tossed around 70-degree dewpoints, the levels at which most agree things feel pretty steamy and tropical. The skeptic in us thinks that exaggerated dew point temperatures are used to grab attention in the same way that exaggerated wind chill temperatures are used in the winter. Today seems to be one of those days.

This morning's blog from the Star Tribune states that today's (Saturday's) dew points will be in the tropical 70s per below:

However, dew point forecasts obtained from Weather Underground and sourced from the National Digital Forecast Database (NWS) predict dew points will go no higher than 65 today:

In the world of dew points, a dew point difference of five or more degrees from 65 to 70+ is significant. It's the difference between "rather muggy" and "really muggy/oppressive."