Online Air Density Any Good?

[SpeedThrills]

Is this usable? Maybe just an additional source of info?
Cecil County Dragway - Rising Sun, Maryland - Engine Tuning Weather

 

[B3422w5]

I use this one below, have compared it with guys that have a weather station at the track and have been pleasantly surprised with its accuracy.
I think my car is very consistent.definately better than the driver

Drag Racing Weather Station - Apps on Google Play

 

[A body]

Guess I’ve never compared my station to the online stuff.

Airdencityonline.com is one I’ve looked at when I’m following some racer friends online