Air temperature
Air pressure

Relative humidity

Wind speed
Wind direction
Rain

±0.3 °C at +20 °C (+68 °F)
±0.5 hPa at 0 … +30 °C (+32 … +86 °F)
±1 hPa at -52 … +60 °C (-60 … +140 °F)
±3 %RH at 0 … 90 %RH
±5 %RH at 90 … 100 %RH
±3 % at 10 m/s
±3.0° at 10 m/s
±5 % for daily accumulation