Arizona Meteorological Network (AZMet)

For over 37 years, AZMet has provided high-quality weather data to support agriculture, public safety, and resource management across Arizona. With 33 stations reporting conditions every 15 minutes, AZMet offers free online tools for farmers, urban planners, and the public—helping improve irrigation, forecast severe weather, manage livestock heat stress, and optimize water use. Almost 3,000 people per moth utilize the network's data, summaries and tools which are freely available online.

Available data

• Measures air and soil temperature, humidity, precipitation, solar radiation, and wind direction and speed.
• Calculates chill hours, dew point temperature, evapotranspiration, heat units, and vapor pressure.
• Maintains a database of hourly and daily values of both measured and calculated variables.

A weather-data benchmark

• 100% of hourly and daily data undergo automated and manual quality control.
• Each network station is visited 8 to 9 times per year for inspection, maintenance and sensor calibration.
• Each station takes almost 70,000 sensor readings per day and reports the latest conditions every 15 minutes.