Weather Data Quality

Sensor Accuracy (built-in error tolerance):

Barometric Pressure: +/- 0.03"Hg ( +/- 1.0 mb )
Temperature: +/- 1° F.
Humidity: +/- 4%
Dewpoint (calculated): +/- 4° F.
Rainfall: +/- 4% of total
Windspeed: +/- 2 mph or +/- 5%, whichever is greater

Calibration:

Calibration of station's pressure, temperature, humidity, and windspeed sensors is verified twice monthly using a NIST-traceable Kestrel 4500 Weather Tracker. Calibration of temperature and humidity sensors is additionally verified using a Testo 610 Temperature / Humidity Meter.