Next-Generation Weather Intelligence — Built for Motion
Weather data is only valuable if it's accurate in the moment you need it.
The new 300WX WeatherStation® from
Airmar is engineered for professionals who operate in motion — agricultural
operators, autonomous vehicle designers, marine integrators, and industrial
system builders who can’t afford uncertainty.
Unlike traditional wind sensors, Airmar WeatherStations deliver accurate wind
speed and direction from moving vehicles. By combining GNSS positioning, a
stabilized 3-axis compass, and motion sensing, they continuously correct
apparent wind caused by movement to deliver calculated Dynamic True wind speed
and direction. Whether mounted on an agricultural sprayer, sailboat, weather
vehicle, or autonomous platform, the wind data remains accurate — even while
you’re moving.
Designed for Modern Equipment Integration
The 300WX was built with today’s machinery in mind. With added J1939 and ISOBUS
outputs and automatic baud-rate detection, it integrates seamlessly into
agricultural and heavy-equipment systems. Installation is simple. Compatibility
with a wide range of systems is proven. Integration headaches are reduced.
Built to Work — Not to Be Serviced
Mechanical sensors fail. Wind cups break. Vanes wear out. The 300WX never
does—ultrasonic technology means no moving parts, no maintenance, no downtime.
Install it once. Rely on it every day.
Wireless Bluetooth™ connectivity** to Airmar’s CAST™ app allows configuration,
calibration, and firmware updates without removing the instrument from its
mounted location. No pulling equipment out of service. Just fast, secure updates
from a mobile device.
A Complete Environmental Picture
In a single compact instrument, the 300WX provides a holistic view of
environmental conditions — wind speed and direction,
temperature, barometric pressure, relative humidity, heat index and wind
chill, vessel or vehicle motion, and GNSS positioning. It measures both the
weather around you and the motion of the platform beneath it.
That context is what transforms raw data into operational intelligence.
-
Ultrasonic measurement of apparent and Dynamic true wind speed and direction
-
Barometric pressure
-
Air temperature and wind chill
-
Relative humidity (field serviceable option)
-
Calculated dew point and heat index
-
GNSS position, speed over ground, and course over ground
-
Three-axis, solid-state compass with dynamic stabilization
-
Three-axis rate gyro supplies rate-of–turn data
-
Three-axis accelerometer for best-in-class pitch and roll information
-
Housing IP64 rated for dust/water-ingress protection
-
Data output via a single cable (various lengths available)
-
NMEA 0183/ASCII serial data protocol over RS-232 interface
-
NMEA 2000 protocol over CAN
-
J1939
-
ISOBUS
New Features of the 300WX WeatherStation Instruments:
-
Enhanced wind speed accuracy: 1.5 knots RMS at 20 knots
-
Bluetooth® wireless
connectivity for use with Airmar’s CAST™ app
to view data, configure sensors, and perform firmware updates
-
Added communication protocols: J1939 and ISOBUS
-
Automatic baud rate detection for J1939 and ISOBUS (250 kbps / 500 kbps)
Brand: Airmar
Technology
Air Temp Accuracy: ±1.1°C
at 20°C
Air Temp Range: -40
to 80°C (-40 to 176°F)
Air Temp Resolution: 0.1°C
Barometric Pressure Accuracy: ±1
hPa at 25°C
Barometric Pressure Range: 300
to 1100 hPa
Barometric Pressure Resolution: 0.1
hPa
Certs And Standards: CE,
RoHS, IEC61000-4-2, IEC60945, IEC60950_1C, IEC60950_22A, EN55022, EN55024,
EN14982; Ingress Protection, IP66 (IP64 with optional Relative Humidity
sensor)
Communications Available Hardware Interface: Serial
RS232, Serial RS422, CAN
Communications Available Protocol: Serial
- NMEA 0183, CAN NMEA 2000, J1939, ISOBUS
Communications Serial Data Transmission Code: ASCII
Communications Serial Output Rate: 1
Hz typical. User selectable. 10 Hz maximum recommended
GNSS Position Accuracy: 2.5
m (8’) CEP ‡
Note: Cables
sold separately unless otherwise specified
Operating Temp Range: -25
to 55°C (-13 to 131°F)
Optional RH Accuracy: ±5%
RH at 0 to 90% RH at 20°C
Optional RH Range: 0
to 100% RH
Optional RH Resolution: 0.1%
RH
Pitch Roll Accuracy: ±1°
in range of ±30°
Pitch Roll Measurement Type: MEMS
Pitch Roll Range: 60°
Power Supply Current: <75
mA (<0.9 W) at 12 VDC
Power Supply Voltage: 9
to 40 VDC
Recommended Use: Marine
or Land-Based, Mobile or Stationary
RH Accuracy: ±5%
RH @ 0 to 90% RH @ 20°C
Three Axis Compass Dynamic Heading Accuracy: 2°
dynamic heading accuracy
Three Axis Compass Range: 0
to 359.9°
Three Axis Compass Static Heading Accuracy: 1°
static heading accuracy
Weight: 300
g (0.7 lb.)
Wind Direction Accuracy: 2.5°
RMS @ 20 knots
Wind Direction Range: 0°
to 359.9°
Wind Direction Resolution: 0.1°
Wind Speed Accuracy: 1.5
knots RMS @ 20 knots
Wind Speed Calculations: User
configurable damping
Wind Speed Range: 0
to 40 m/s (0 to 89 MPH)
Wind Speed Resolution: 0.1
m/s
Exterior Color: White
Humidity: Included
Waterproof Rating: IPX6
(Relative Humidity/IPX4), IP66 (IP64 with optional RH sensor installed)
NMEA 2000 LEN: 2
Mounting Thread: Standard
1”-14 UNS (3/4” NPT optional)
Sensor Connector: 10WS
Refurbished: No
Comm Method: NMEA
0183/RS232
Country of Origin: USA
RoHS Compliant: Yes
WARNING:
This product can expose you to chemicals including Di-n-hexyl Phthalate (DnHP)
which is known to the State of California to cause reproductive harm, and
Vinyl Chloride which is known to the State of California to cause cancer. For
more information go to 
