Kestrel 3500 Weather Meter Olive Drab - Digital Psychrometer with Night Vision Backlight

The Kestrel 3500 Weather Meter in Olive Drab is a rugged, full-featured handheld weather instrument built for hunters, shooters, and outdoor professionals who need accurate, real-time conditions without the complexity of data logging. This digital psychrometer measures nine distinct environmental variables—from wind speed and barometric pressure to heat stress index and dewpoint—giving you the weather intelligence to make better decisions in the field. The night-vision-compatible backlight sets this Olive Drab version apart: it uses an optical filter to reduce brightness and minimize blue and green spectrum light, preserving your night vision without sacrificing readability when you're glassing at dusk or working in low light.

Built tough and weighing just ounces, the Kestrel 3500 floats and is fully waterproof, so it survives drops, stream crossings, and the inevitable abuse of field use. The external temperature sensor lets you gauge air, water, or snow temperature separately, while the patented user-replaceable impeller captures accurate wind data even in gusty conditions. Barometric pressure and trend indicator help you forecast weather shifts up to three hours ahead—critical intel when you're planning a hunt or deciding whether to dial in at the range. The large, easy-to-read display, data hold function, and intuitive menu system mean you're not fumbling through menus when conditions matter.

Unlike higher-end Kestrel models, the 3500 doesn't log or store historical data; it gives you the current picture and a three-hour pressure trend arrow. For hunters, tactical shooters, and sportsmen who need real-time weather readings without the weight or price of a connected device, that's exactly the right tool. The unit ships with a protective cover, neck lanyard, and CR2032 battery; if you ever need to recalibrate the humidity sensor, Kestrel offers a dedicated calibration kit.

Key Features

• Measures 9 environmental conditions: wind speed, barometric pressure, altitude, temperature, humidity, heat stress index, dewpoint, wet bulb temperature, and wind chill
• Night-vision-preserving backlight with optical filter to reduce blue and green spectrum light
• External waterproof thermistor for precise air, water, and snow temperature readings
• Barometric pressure trend indicator forecasts weather shifts up to 3 hours ahead
• Patented user-replaceable impeller for consistent wind measurement
• Waterproof and floats; rugged protective cover with sure-grip overmold
• Large backlit display with easy-to-navigate menu system
• Data hold function to freeze readings for review
• High-precision pressure sensor; thermally adjusted humidity sensor for stability in rapid condition changes
• Field-recalibrable humidity sensor (calibration kit sold separately)
• Assembled entirely in the USA

Specifications

Frequently Asked Questions

Will the night-vision backlight work with night-vision goggles?

No. While the backlight is designed to preserve your natural night vision with reduced brightness and filtered blue/green spectrum light, the soft greyish-pink color it emits is still in the visible spectrum and is not compatible with night-vision equipment. It's ideal for maintaining adapted eyes during evening hunts or low-light fieldwork without washing out your vision.

What's the difference between the Kestrel 3500 and higher models like the 5000?

The Kestrel 3500 gives you full weather measurements and a three-hour pressure trend indicator without data logging or historical storage. It's purpose-built for hunters and shooters who need real-time conditions and forecasting. Higher-end models like the 5000 add data logging, a brighter screen, and newer humidity sensor technology, but cost more and add complexity you may not need if you're only interested in current readings.

Can I measure water and snow temperature with the 3500?

Yes. The Kestrel 3500 includes an external waterproof thermistor that allows you to measure the temperature of water, snow, or open air separately from ambient readings. Simply insert the sensor into the medium you want to measure.

What's included in the box?

The Kestrel 3500 comes with a protective slip-on cover, a neck lanyard, and a CR2032 coin cell battery ready to use. The battery provides approximately 300 hours of operation before replacement.