Residents put up 400 sensors this summer

In June, we asked residents on three St. George streets to help measure the heat. By the end of July, 120 households had put up 400 small sensors on porches, light poles, and window sills.

Each sensor records the temperature every five minutes and sends it to an open dashboard. Initial results show that on a sunny afternoon, a street with young trees can stay several degrees cooler than a street without shade.

The sensors stay up until the end of September. Over the winter, we will compare the data with planned street changes and publish the results and sensor code so other neighborhoods can build their own.