Popular Deal
staff pick
Amazon · Jul 3, 2026
Popular Deal
$35 $59
free shipping
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This AcuRite weather station is $24 off the regular price of $59 at Amazon. It combines indoor and outdoor sensors with a color display that shows temperature, humidity, barometric pressure trends, and moon phase data. Buy Now at Amazon
Features
- Includes indoor and outdoor temperature sensors
- Tracks humidity and barometric pressure trends
- Provides a 12-hour weather forecast
- Illuminated color LCD display with adjustable dimmer
- Shows moon phase and high/low temperature records
- Runs on 2 AA batteries (not included)
Amazon · Jul 3, 2026
$10 $16
free shipping w/ Prime
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This TempPro TP50 hygrometer is $10.49, down from $15.99 at Amazon. It updates readings every 10 seconds and is accurate to within 2-3% humidity and 1°F, with a magnetic back and stand for flexible placement around the home. Buy Now at Amazon
Features
- humidity meter w/ icons
- accuracy of ±2~3%RH and ±1°F
- tabletop stand & magnetic back
- powered by 1 x AAA battery (included)
expired
Amazon · Expired Jul 1, 2026
$9 w/ Prime $15
free shipping w/ Prime
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Useful for anyone who wants to measure electromagnetic field levels around appliances, wiring, or electronics at home, and currently $6 below the list price of $15. Apply coupon code "CLYF2RRW" for a savings of $6. Buy Now at Amazon
Features
- Measures 20-3500MHz electric and magnetic fields
- Displays real-time numerical readings and waveforms
- Includes sound and flash alert notifications
- Rechargeable battery for portable on-the-go use
- Compact and lightweight design for easy handling
expired
Amazon · Expired Sep 26, 2026
$19 $25
free shipping w/ Prime
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Tracking temperature and humidity remotely comes in handy for wine storage, plant rooms, or nurseries where you want alerts if conditions drift. It's $6 off the $24.99 list price with no code needed. Deal ends October 8. Buy Now at Amazon
Features
- Direct Wi-Fi connection, no base station required
- High-accuracy Swiss-made temperature and humidity sensors
- Instant app alerts for environmental threshold breaches
- Alexa voice command compatibility
- Detailed data tracking with dew point and VPD charts
staff pick
Amazon · Jul 29, 2026
$35 $59
free shipping
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This AcuRite weather station is $24 off the regular price of $59 at Amazon. It's at an all-time price low at Amazon. It combines indoor and outdoor sensors with a color display that shows temperature, humidity, barometric pressure trends, and moon phase data. Prime members get free shipping. Buy Now at Amazon
Features
- Includes indoor and outdoor temperature sensors
- Tracks humidity and barometric pressure trends
- Provides a 12-hour weather forecast
- Illuminated color LCD display with adjustable dimmer
- Shows moon phase and high/low temperature records
- Runs on 2 AA batteries (not included)
expired
Amazon · Expired Sep 7, 2026
$9 $10
free shipping w/ Prime
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Handy for keeping tabs on temperature and humidity in a greenhouse, closet, or pair of rooms without swapping batteries, since the solar panel keeps it running. At $8.90, that's about a dollar off the $9.89 list price. Deal ends September 11. Buy Now at Amazon
Features
- Solar-powered for continuous, battery-free operation
- High-precision sensing updates every 10 seconds
- Visual comfort level indicator for health monitoring
- Large LCD screen with easy-to-read digits
- Extensive 3-year warranty for long-term reliability
Amazon · Aug 18, 2026
$11 $16
free shipping w/ Prime
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Update: The price has changed to $10.99 since this was originally published.
Amazon offers the TempPro Indoor Digital Hygrometer and Thermometer for $10.49. That's a $2 low. Shipping is free for Prime members. Buy Now at Amazon
expired
Amazon · Expired Sep 25, 2026
$14 $19
free shipping w/ Prime
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This rain gauge from Toiclebor is $14.22, down from $18.99 at Amazon. It measures up to 7" of rainfall with a dual inch and centimeter scale, and can be set up with the included ground stake or mounted on a wall or fence. Buy Now at Amazon
expired
Amazon · Expired Jun 23, 2026
$31 w/ Prime $60
free shipping
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Prime members can get this emergency weather gadget for $31 today in a few colors. You'd pay around double elsewhere. Shipping is free. Buy Now at Amazon
Features
- 10,000mAh rechargeable lithium polymer battery
- USB-C input (2A, full charge under 8 hours)
- IPX6 waterproof rated
- AM 520-1710 kHz / FM 87-108 MHz / NOAA 162.400-162.550 MHz
- 48-LED reading lamp + 20-LED flashlight + SOS alarm + compass
expired
Amazon · Expired Jun 8, 2026
$24 $34
free shipping w/ Prime
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This emergency radio is $23.79 at Amazon in Red. That's around $9 less than other sellers charge. Shipping is free for Prime members. Buy Now at Amazon
Features
- NOAA/AM/FM reception
- 10,000mAh lithium polymer battery
- USB-C input, solar, and hand-crank charging
- SOS alarm and built-in compass
- 3-mode LED flashlight and reading lamp
- 4 power indicator lights
expired
Amazon · Expired Sep 27, 2026
$21 $25
free shipping w/ Prime
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Handy for keeping tabs on temperature and humidity in a room, greenhouse, or wine storage without walking in to check, and it's currently $3.75 off the $25 list price at Amazon. Buy Now at Amazon
Features
- Real-time comfort level display
- 180-day historical cloud data storage
- 2,034-foot LoRa long-range connectivity
- High-precision Swiss sensors
- 5-year battery life
expired
Amazon · Expired Sep 27, 2026
$32 $40
free shipping w/ Prime
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Tracking temperature and humidity both inside and out is handy if you garden, deal with a finicky HVAC system, or just want to know what to wear before you step outside, and this one runs $7.70 below the $40 list price on Amazon. Buy Now at Amazon
Features
- Large color LCD display for instant data
- Dual power modes with continuous backlight option
- Supports three remote sensors for multiple locations
- Predicts accurate weather for next 12-24 hours
- Atomic clock with dual alarms and date
Amazon · 1 day ago
$50 $50
free shipping
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Update: The price has changed to $49.99 since this was originally published.
Tracking CO2 levels indoors helps you know when a room needs fresh air, which matters if you notice stuffiness or grogginess during long work or sleep sessions, and this monitor runs $4 below its list price right now. Buy Now at Amazon
Features
- Swiss Sensirion high-precision CO2 sensor
- Customizable CO2 concentration alerts
- Real-time temperature and humidity monitoring
- Integrated clock calendar and alarm clock
- Versatile use across diverse indoor environments
expired
Amazon · Expired Sep 25, 2026
$47 $58
free shipping
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Anyone dealing with stuffy rooms or unexplained headaches at home can use this to actually check CO2 levels instead of guessing when it's time to open a window, and it's currently $11.25 off the list price. Buy Now at Amazon
Features
- Monitor CO2, temperature, and humidity in real time
- Enjoy 3-6 months battery life on one charge
- High-precision Swedish CO2 sensor
- Visual and audible air quality alerts
- Portable design for tabletop or wall mounting
expired
Amazon · Expired Sep 25, 2026
$79 $99
free shipping
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Handy if you leave pets in an RV, car, or camper and want alerts to your phone if the temperature or power drops, and at $79 it's about $20 off the $99 list price. Buy Now at Amazon
Features
- Real-time temperature and humidity smartphone alerts
- Instant email and text alerts for dangerous conditions
- Portable design for RVs, cars, and travel
- Built-in rechargeable battery with 1-2 day life
- 24/7 remote monitoring via cellular connectivity
Amazon · 1 wk ago
$28 $28
free shipping w/ Prime
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Update: The price has changed to $27.99 since this was originally published.
Tracking both indoor and outdoor temps at a glance suits anyone who wants to check conditions before heading out without opening the door, and it's currently $2.50 off the list price. Buy Now at Amazon
Features
- Ultra-large, bold display for easy reading
- Humidity comfort indicator for healthy indoor air
- Automated 24/48-hour temperature and humidity tracking
- 330ft wireless range for multi-zone monitoring
- Sleek, minimalist wireless design for versatile placement
expired
Amazon · Expired Sep 21, 2026
$21 $24
free shipping w/ Prime
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Anyone tracking conditions in a garage, greenhouse, or backyard will get steady use out of this for monitoring indoor and outdoor temps without stepping outside, and it's currently $2.75 off the list price. Buy Now at Amazon
Features
- Ultra-large, bold display for easy reading
- Humidity comfort indicator for healthy indoor air
- Automated 24/48-hour temperature and humidity tracking
- 330ft wireless range for multi-zone monitoring
- Sleek, minimalist wireless design for versatile placement
expired
Amazon · Expired Sep 21, 2026
$21 $24
free shipping w/ Prime
more
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Anyone tracking conditions in a garage, greenhouse, or backyard will get steady use out of this for monitoring indoor and outdoor temps without stepping outside, and it's currently $2.75 off the list price. Buy Now at Amazon
Features
- Ultra-large, bold display for easy reading
- Humidity comfort indicator for healthy indoor air
- Automated 24/48-hour temperature and humidity tracking
- 330ft wireless range for multi-zone monitoring
- Sleek, minimalist wireless design for versatile placement
expired
Amazon · Expired Sep 20, 2026
$25 $30
free shipping w/ Prime
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Handy for keeping tabs on the temperature and humidity in a garage, nursery, or greenhouse without stepping outside to check, and it's currently $4.50 off the list price at Amazon. Buy Now at Amazon
Features
- Pre-calibrated high-accuracy temperature and humidity sensors
- Wireless data transmission up to 330ft range
- Real-time outdoor temperature and humidity alerts
- Adjustable 3-level brightness backlit display
- Includes three outdoor sensors with daily min/max recording
expired
Amazon · Expired Sep 20, 2026
$28 $33
free shipping w/ Prime
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Tracking temperature and humidity in two locations at once makes sense for garages, greenhouses, or nurseries where you need readings without walking outside, and it's currently $5 off the $33 list price. Buy Now at Amazon
Features
- Pre-calibrated high-accuracy temperature and humidity sensors
- Wireless data transmission up to 330ft range
- Real-time outdoor temperature and humidity alerts
- Adjustable 3-level brightness backlit display
- Includes three outdoor sensors with daily min/max recording