Temtop Air Quality Monitor Indoor Thermo-Hygrometer - PM2.5, AQI, Temperature, and Humidity Meter for Home, Office, or School, Air Quality Measurement, 60-Day Battery Life

The best thing is that it shows both AQI and PM 2.5. It has a compact design and the display is also very good.

It’s a good air quality monitor but it updates in real time only when it is plugged-in. Though the battery lasts very long, the PM2.5 and AQI readings take a lot of time to update (more than a few minutes). Temperature updates in seconds even on battery. You have to keep it plugged-in if you want to see PM2.5 and AQI getting updated in seconds. Have compared with readings on air purifier and the readings are close, so appears to be accurate with 10% error as claimed.

It has been less than a month since the product was delivered, yet the device has already become defective. The AQI reading is permanently stuck at “1” and does not change at all, regardless of location or environment. Troubleshooting already done: To eliminate basic usage factors, I have: Turned the device on/off and allowed proper warm-up time Placed the monitor in multiple indoor and outdoor environments Fully charged the battery Ensured the inlet/outlet vents are not blocked and gently cleaned them Waited 15–20 minutes in each environment for readings to stabilize Despite all of this, the AQI value remains fixed at “1” and does not reflect actual air conditions, indicating a clear malfunction or sensor failure.

This air quality monitor is working perfectly fine. I have seen some comments saying that it is not stable but I have tested it in multiple scenarios and it is working perfectly fine. I have recently bought an air purifier. Before turning on the air purifier the AQI was around 85 in my room. After 10 minutes of running the air purifier at full speed the value dropped to 25. I also tried it in multiple places during multiple days and the values looked consistent. I think this is a genuine product. I am attaching a few images captured at different locations. The only problem I noticed is when we use it directly under the sunlight it is giving a lesser AQI value. I think they have also mentioned this point in their manual, saying that direct exposure to a light source can alter the values. That is the only issue I found with it but for internal use cases it is great and really content and the battery life is so good. I have been using it for almost one week and even a single bar has dropped on it. Just to clarify I have been only using it on and off for short durations to test the AQI. I haven't left it turned on but even with this I think the battery life is really good.

I’m not convinced it works. The Auto mode doesn’t do as expected. I have to switch between Eco and Auto to trigger the device to actively measure the values only for the values to remain static (like you’d expect on eco mode) until I switch from Auto to Eco and back to Auto. Too expensive for it does. The battery life is great. Seems well built and easy to carry but not happy with the way it displays the readings.

Anyone looking for simple portable AQI meter can opt for this. Good build quality. magnetic stand is useful to keep it on top of table or stick to any magnetic surfaces. Legible reading for PM2.5 and AQI values. Temp and Humidity displays as well. Various modes to show AQI value in real time or based on time intervals 5 min or 30 min (to save battery life). Included rechargeable battery has good backup time. The AQI sensor is very sensitive and shows the real time AQI in seconds depending on the change in environment (like smoke, burning agarbatti etc. in the room) This has no wifi for App connectivity to show trends etc (also not expecting this feature at this price point). There is no inbuilt light to show value in dark (not a major -ve) The package did not include detailed manual about the various modes it has. I had to search in internet to get to know about it. Overall really good product

This is best for Indian customers. Is very accurate, I have tried and tested it against other products in same category. Easy to use and carry with you anywhere you go with a high battery life. Value for money without question for all those who want to check the AQI in their particular areas. Functionality is great and is very easy to understand!

The product shows the AQI as described however the data is not real-time. The automatic mode is not usefull at all and manual mode refresh in half n hour.