Kinsa Makes smart thermometers. They have been taking the data generated by the thermometer and manual inputs into their app to generate the rates of feverish illnesses. They have made their map public:
https://healthweather.us
For us in Jacksonville, I can see that the rate of feverish illnesses have declined since the peak on March 18th. Looking at the map this weekend was very scary to see Florida lit up red for atypical illness.
Andy Slavitt on Twitter seems to have access to more of their data and has a chart showing the difference between Santa Clara and Miami:
Of course he suggests that Miami will be hard hit in the next few weeks.