Climate measuring

Updated: October 2026Hub page

Climate measuring covers air quality monitor, hygrometer, mould test, thermometer, weather station with 3 outdoor sensors and window thermometer, and the other product types on the cards below. Each comparison says what that product is for, and which checks still apply when the listings change.

Once you have the product type, the comparison is where the current listings live. Shelf prices and makers stay there.

Climate measuring

Air quality monitor

PM2.5, CO2, and not a carbon monoxide alarm

Compare 11 air quality monitors on amazon.co.uk, about £16.99 to about £159.99. See CO2 sensor type, PM2.5, and which meter is not a carbon monoxide alarm.

Comparison guides

Analogue thermometer

Room, fridge and garden dials

Eleven analogue thermometers on amazon.co.uk, from about £3.95 to about £17.99. Match the Celsius scale to a room, a fridge or the garden.

Comparison guides

Baldr weather station

Console, outdoor sensor and clock

Twelve weather stations on amazon.co.uk, from about £16 to about £189. Check MSF for UK time, humidity, and whether you need a wind-and-rain array.

Comparison guides

Barometers

Aneroid dial or a weather glass

Seven barometers on amazon.co.uk, from about £14.99 to about £279.90. Compare the pressure scale, aneroid or weather glass, and the review count behind the stars.

Comparison guides

Bluetooth thermometer

Phone sensor for temperature and humidity

Five Bluetooth thermometers on amazon.co.uk, from about £8.99 to about £16.99. Compare the screen, the stated tolerance, and why open-air range fails indoors.

Comparison guides

Hama weather station

Indoor base and one outdoor sensor

Eleven Hama weather stations on amazon.co.uk, about £15 to £44. Separate a local weather icon, air pressure and a Meteotime packet, and set the DCF77 clock for the UK.

Comparison guides

Hygrometer

Relative humidity for a room

Compare 12 hygrometers on amazon.co.uk, from about £4.79 to £160.99. See the stated RH tolerance, batteries, and the top pick for a small indoor room.

Comparison guides

Infrared thermometer

Forehead window or a surface gun

Compare 12 infrared thermometers on amazon.co.uk, from about £7.78 to £49.99. Forehead units and surface guns, with stated range and who should skip each.

Comparison guides

Mould test

Plates and strips for one surface

Eight mould test kits on amazon.co.uk, from about £12.96 to about £39.97. Sealed plates or a strip sample one spot. A home kit does not clear a house.

Comparison guides

Professional weather station

Wind, rain, and a garden array

Compare 10 professional weather stations on amazon.co.uk, from about £94.99 to £309. See the radio band, mains plug, and Wi-Fi before you buy a garden array.

Comparison guides

Rain gauge

Millimetres at one spot in the garden

Twelve rain gauges on amazon.co.uk, from about £6.59 to about £34.99. Most are manual tubes you empty. A garden reading is not a Met Office total or a flood warning.

Comparison guides

TFA Dostmann hygrometer

Analogue dials for indoor humidity

Compare five TFA Dostmann hygrometers on amazon.co.uk, from about £9.71 to £17.96. See placement, batteries, origin, and regeneration before you buy one.

Comparison guides

TFA Dostmann weather station

One sensor, three places, or a dial

Compare four TFA Dostmann weather stations on amazon.co.uk, from about £36.61 to £82.42. See sensors, DCF clocks, and dials before you buy for a UK home.

Comparison guides

Thermometer

Fever, fridge, or a room dial

Compare 12 thermometers on amazon.co.uk, from about £5.99 to £21.17. Sticks, forehead guns, ear models, and fridge dials before a fever or fridge check.

Comparison guides

Weather station

Forecast console or rain and wind

Compare 11 weather stations on amazon.co.uk, from about £19.99 to £189.24. See rain, wind, MSF clocks, and 868 MHz links before you buy a console or array.

Comparison guides

Weather station with 3 outdoor sensors

Three transmitters, not rainfall

Weather station with 3 outdoor sensors compared: seven amazon.co.uk listings from about £26.99 to £45.99, with MSF clocks, adapters, and review counts.

Comparison guides

Wi-Fi thermometer

Room temperature on 2.4 GHz

Compare nine Wi-Fi thermometers on amazon.co.uk, from about £10.99 to £165.99. Check 2.4 GHz, base stations, screens, and stated accuracy for UK homes.

Comparison guides

Wi-Fi weather station

Garden array and a phone log

Compare nine Wi-Fi weather stations for the UK on amazon.co.uk, from about £49.99 to £239.99. See 868 MHz, rain and wind, and which listings name WOW.

Comparison guides

Window thermometer

Stick-on gauge for shaded glass

Compare six window thermometers on amazon.co.uk in 2026, from about £4.31 to £18.99. Check the shade, pads, a stated tolerance, and one digital min/max.

Comparison guides

Climate measuring blog

View all articles →

Guides on what a home weather station costs, the indoor humidity bands that matter for mould, and where to site an outdoor thermometer so it reads shade rather than a sunny fence.

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Thermometer for a child under five: choose the right type

Your child feels hot, and the drawer holds a digital stick, a room dial and an infrared gun bought for radiators. They may all show degrees Celsius, b

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Rules7 min read

Carbon monoxide alarm rules for UK landlords, 2022

You are about to buy a £70 air meter because the listing mentions carbon monoxide, and the tenancy question was about an alarm. Those are different ob

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UK radon action level: test your home properly

Your new indoor meter may show particles, carbon dioxide and humidity within minutes, yet it has not answered the radon question. The UK radon action

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Common questions about climate measuring

What does an air quality monitor on this hub measure?

It is a small meter for PM2.5, carbon dioxide, a VOC or formaldehyde claim, and usually temperature and humidity. Prefer a stated NDIR or infrared CO2 sensor for ventilation, and a laser PM2.5 reading for smoke or dust. It is not a carbon monoxide alarm, a radon measurement, or a mould repair. Eleven amazon.co.uk listings run from about £16.99 to about £159.99. Nothing on that page was lab-tested.

What does a hygrometer tell you?

A hygrometer reports relative humidity: water vapour as a percentage of what the air could hold at that temperature. It does not remove moisture, and it does not replace extract ventilation. Twelve amazon.co.uk listings run from about £4.79 to about £160.99. On that page the top pick and the best value are the same listing, the TempPro TP157.

Is an infrared thermometer a fever thermometer?

An infrared thermometer reads heat from a surface. Forehead windows in that set sit around 32 °C to 43 °C. Gun tops are 400 °C, 550 °C, 600 °C or 1500 °C. A star rating does not turn a 600 °C gun into a baby thermometer. For illness, use the thermometer comparison: sticks, forehead units, ear models, and fridge dials.

What is a professional weather station in this set?

It is an outdoor array that measures wind and rain as well as temperature and humidity, with an indoor console that shows pressure. The ten stations cost about £94.99 to £309. They are hobby instruments. None is an official Met Office site. A mains lead needs a BS 1363 plug, and uploading consoles in the set need 2.4 GHz.

How is a weather station different from three outdoor sensors?

A weather station name covers a forecast console, with temperature, humidity, a clock and a pressure icon, and an array that adds rain and wind. A cloud icon is not a rain gauge. A weather station with 3 outdoor sensors is a console plus three battery transmitters for temperature and humidity. You use it for a greenhouse, a shed and a shaded wall. It does not measure wind or rain.

What should you check on a Wi-Fi thermometer or Wi-Fi weather station?

A Wi-Fi thermometer sends room temperature and humidity to a phone. Where a listing states a band, it is 2.4 GHz only. It does not keep a baby safe, and a humidity percentage does not diagnose damp. A Wi-Fi weather station also measures the garden. UK Ecowitt stock in that set is 868 MHz, and a forecast icon is still not a rain gauge. A mains adapter must suit 230 V and a BS 1363 plug.

Why can a window thermometer disagree with the forecast?

A window thermometer is a gauge on the glass so you can read the outdoor side from indoors. Sunlit plastic is not air temperature. The Met Office measures shaded air in a Stevenson screen at 1.25 m. Shade on the glass is the check. A room number, rather than the glass, belongs on the thermometer comparison.