Thanks for the hint. I run another station that also tracks the AQI but grabs the data from the Weatherlink server versus direct from the Airlink. I didn't give it any thought and figured they both work the same way. Anyway, multiple people pointed out the obvious that WD uses a local network IP and I should investigate that aspect. I power cycled the Airlink and it appears WD is once again able to communicate. Thanks for the nudge.