The Northern Arizona Mesonet (NAM) is a network of 16 Davis Weather Monitor II or Vantage Pro II wireless, solar-powered weather stations located throughout northeastern Arizona that upload 13 measured and calculated parameters automatically to a web server every 2 minutes. The NAM weather stations use sensors to measure air temperature, humidity, barometric pressure, wind speed, wind direction, and liquid precipitation. The weather station samples the atmosphere every few seconds and send the data via wireless radio to a receiver. The receiver is hardwired to a computer, which hosts software that processes the incoming data, prepares high-quality graphs and tables, archives the data at 2-minute intervals, and updates to a web page every 2 minutes. The network was initiated in 2003 through a partnership between Northern Arizona University (NAU) and the National Weather Service. Most of the weather stations were established a part of Arizona Board of Regents (ABOR) sponsored teacher professional development opportunities to enhance technology-based physical education.