AIRMAR 220WX WeatherStation

These units offer a truly best-in-class solution at a better price point than any other weather monitoring system on the market today.

Whether you are trying to improve safety or efficiency, the WX Series Ultrasonic WeatherStation® Instruments meet a growing need for real-time, site-specific weather information. These accurate units offer weather specific data to help organizations monitor weather conditions on-site or in remote locations.

These all-in-one weather sensors measure apparent wind speed and angle, barometric pressure, air temperature and wind chill temperature. With the optional internal compass and GPS, true wind speed and direction can also be calculated. The UV stabilized, compact housing is fully waterproof

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  • WeatherStation® Instruments combine up to seven sensors, all with no moving parts, in one compact unit
  • Wind readings are not affected by the common problems known in mechanical anemometers and weather measuring devices like bearing wear, salt and dirt build-up or bird perching, which can all result in failure or data inaccuracy
  • Units are easy-to-install either permanently, or as a portable system. They can be installed on a standard pole with 1”-14 UNS or 3/4” NPT threads
  • IPX6 waterproof rating (units with the relative humidity option added are IPX4 waterproof rated)
  • Optional heater model available for colder climates under 1° C
  • Operating voltage range of 12-24 VDC


Wind speed & direction
10 Hz GPS
Solid state compass
3-axis accelerometer
Ultrasonic wind readings
Optional relative humidity
Barometric pressure
Air temperature
wind chill
Optional heater

The WeatherStation Instrument comes with our intuitive WeatherCaster™ Software. Data can be viewed in both digital and analogue format and can be saved for a set period of time. The log time can be adjusted in intervals from 6 to 72 hours. Standard NMEA sentences and an RS232 interface allows for the flexibility of designing your own software program to fit your specific application. Our comprehensive technical manual makes the job easy!




  • Wind Speed Range:
    • 0 knots to 78 knots (0 MPH to 90 MPH, 0 m/s to 40 m/s)
  • Wind Speed Resolution:
    • 0.1 knot (0.1 MPH, 0.1 m/s)
  • Wind Speed Accuracy @ 0°C to 55°C (32°F to 131°F), no precipitation*:
    • Low Wind Speeds:
      • 0 -10 knots; 1 knot RMS +10% of reading
      • (0 MPH to 11.5 MPH; 1.1MPH + 10% of reading)
      • (0 m/s to 5 m/s; 0.5 m/s + 10% of reading)
    • High Wind Speeds:
      • 10-78 knots; 2 knots RMS or 5%, whichever is greater
      • (11.5 MPH to 90 MPH; 2.3 MPH or 5%, whichever is greater)
      • (5 m/s to 40 m/s; 1 m/s or 5%, whichever is greater)
  • Wind Speed Accuracy in wet conditions**:
    • 5 knots RMS (5.7 MPH RMS, 2.5 m/s RMS)
  • Wind Direction Range: 0° to 360°
  • Wind Direction Resolution: 0.1°
  • Wind Direction Accuracy @ 0°C to 55°C (32°F to 131°F), no precipitation*:
    • Low Wind Speeds (5° RMS typical):
      • 4 – 10 knots (4.6 MPH to 11.5 MPH, 2 m/s to 5 m/s)
    • High Wind Speeds (2° RMS typical):
      • >10 knots (>11.5 MPH, >5 m/s)
  • Wind Direction Accuracy in wet conditions** (8° RMS Typical):
    • 8 knots (>9.2 MPH, >4 m/s)
  • Compass Accuracy:
    • 1° static heading accuracy; 2° dynamic heading accuracy
  • Pitch and Roll Range / Accuracy: ±50° / <1°
  • Air Temperature Range***: -40°C to 55°C (-40°F to 131°F)
  • Air Temperature Resolution: 0.1°C (0.1°F)
  • Air Temperature Accuracy: ±1.1°C (±2°F)* @ >4 knots wind (>4.6 MPH wind) (>2 m/s wind)
  • Barometric Pressure Range: 300 mbar to 1100 mbar (24 inHg to 33 inHg, 800 hPa to 1100 hPa)
  • Barometric Pressure Resolution: 0.1 mbar (0.029 inHg, 0.1 hPa)
  • Barometric Pressure Accuracy: ±1 mbar (±0.029 inHg, ±1 hPa) when altitude correction is available
  • Relative Humidity Range: 10% to 95% RH
  • Relative Humidity Accuracy*: ±5% units RH
  • GPS Position Accuracy: 3 m (10’) with WAAS/EGNOS (95% of the time)
  • Operating Temperature Range: -25°C to 55°C (-13°F to 131°F)
  • Heater Operating Temperature Range: -40°C to 55°C
    • Heater cycles when sensor reaches 1°C
  • Supply Voltage: 12 VDC to 24 VDC
  • Heater Supply Voltage: 24 VDC
  • Supply Current (@ 12 VDC):
    • (<165 mA) <2.0W, LEN 4
  • Supply Current (@ 24 VDC):
    • (<85 mA) <2.0W
  • Heater Supply Current (@ 24 VDC):
    • < (2.5 A) <60W
  • Weight: 300 grams (0.8 lb)
  • Communication Interface: NMEA 0183 (RS422) and NMEA2000® (CAN bus)****
  • Mounting Thread Size on Base: Standard 1”-14 UNS (3/4” NPT optional)
  • Certifications and Standards:
    • CE, IPX6 (Relative Humidity/IPX4), RoHS, IEC60945

RMS—Root Mean Square, LEN—Load Equivalency Number
*When the wind speed is less than 2 m/s (4.6 MPH) and/or air temperature is below 0°C (32°F),
wind, temperature, and relative humidity readings will be less accurate.
**Wet conditions include moisture, rain, frost, dew, snow, ice and/or sea spray in the wind channel.
***Temperature and relative humidity reports invalid during heater operation.
****Airmar has made the address claiming modifications to enable compatibility with the ISO 11783
communication protocol for the agriculture industry – that is based on the SAE J1939 protocol.

Ordering Information:

WS-120WX NMEA 0183/2000 Weatherstation (no RH)
WS-120WX-RH NMEA0183/2000 WeatherStation w/ RH
WS-220WX NMEA0183/2000 WeatherStation (no RH) 
WS-220WX-HTR NMEA0183 WeatherStation (no RH) w/ HTR
WS-220WX-RH NMEA0183/2000 WeatherStation w/ RH
WS-220WX-RS232 NMEA0183/2000 WeatherStatn (No RH) RS232



WS2-C0.25BW NMEA2000 Cable .25M  N/C
WS2-C02 NMEA2000 Cable 5 Pin Device Net 2m/6.5′
WS2-C06 NMEA2000 Cable 5 Pin Device Net 6m/20′ 
WS2-C10 NMEA2000 Cable 5 Pin Device Net 10m/33′
WS2-C30 NMEA2000 Cable 5 Pin Device Net 30m/100′
WS2-USB Weather Station U200 N2K/USB Interface
WS-C01 1 Meter Standard Weatherstation Cable 
WS-C10 10 Meter Standard Weatherstation Cable 
WS-C10-HTR 10m WeatherStation w/ HTR 0183 Cable
WS-C10-HTR-10 10 M WS Cable w/ HTR, 10-Pin
WS-C15 15 Meter Standard Weatherstation Cable 
WS-C25 25 Meter Standard Weatherstation Cable
WS-C30-HTR 30m WeatherStation w/ HTR 0183 Cable
WS-C30-HTR-10 30 M WS Cable w/ HTR (10Pin)
WS-C35 35 Meter Standard Weatherstation Cable
WS-C45 45 Meter Standard Weatherstation Cable
WS-CC15 NMEA0183/NMEA2000 15M Combo Cable Kit
WS-CC30 NMEA0183/NMEA2000 30M Combo Cable Kit





Weight 5 kg
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