The Kestrel 4000 Pocket Weather Tracker is still the most comprehensive pocket weather meter on the market. The Kestrel 4000 is unparalleled in its ease of use and totally customizable navigation and data display.

In addition to measuring the current conditions, it tracks and stores up to 2000 sets of data, and data can be uploaded to a PC with the optional Kestrel Interface.

The Kestrel 4000 has been subjected to impact, water submersion and extreme temperature tests, and keeps on working. Kestrel 4000’s have been put to the test in some of the harshest conditions on the planet.

• Barometric pressure
• Pressure trend
• Altitude
• Relative humidity
• Heat stress index
• Dewpoint
• Wet bulb temperature
• Density altitude
• Wind chill
• Air, water, and snow temperature
• Current wind speed
• Average wind speed
• Maximum wind gust

• Waterproof and floats
• Easy to read, backlit display
• Time and date
• Exterior temperature, humidity, and pressure sensors for fast and accurate readings
• Humidity sensor can be recalibrated in the field with our Relative Humidity Calibration Kit.
• Minimum, maximum, and average values
• Automatically store measurements, even when the unit is turned off
• Manually store measurements with the press of a button  
• Customizable data storage - 2000 data points
• Graph and recall trends
• Customize screens to display user-selected measurements
• Data charting
• Data upload (with optional interface)
• Five languages (English, French, Spanish, German, and Italian)
• User-replaceable impeller
• Flip-top impeller cover allows use of other functions while protecting the impeller (hard cases available.)
• US Patent Nos. 5,783,753 and 5,939,645 and 6,257,074
• All instruments and accessories are completely assembled in the USA
• 2-year warranty

• Soft carry pouch
• Wrist and neck lanyards
• Batteries - 2 AAA
• Kestrel Certificate of Conformity