# Strange extra low readings from SDS011

**URL:** https://forum.sensor.community/t/strange-extra-low-readings-from-sds011/4623
**Category:** Uncategorized
**Created:** [March 17, 2025, 4:13pm UTC](https://forum.sensor.community/t/strange-extra-low-readings-from-sds011/4623 "2025-03-17T16:13:22Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![metron6](https://forum.sensor.community/user_avatar/forum.sensor.community/metron6/32/2393_2.png) [@metron6](https://forum.sensor.community/u/metron6)
#### Post date: [March 17, 2025, 4:13pm UTC](https://forum.sensor.community/t/strange-extra-low-readings-from-sds011/4623/1 "2025-03-17T16:13:22Z")

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hello all,

since this morning our SDS011 sensors are sending extra low readings…  
these are from two different places.  
the one is the first one i bought from the Polish site.  
the other is from aliexpress…  
are your sensors working fine ?

 ![Screenshot 2025-03-17 at 6.08.44 PM](https://forum.sensor.community/uploads/default/original/2X/5/5587743b54c9428643e55317cf10f4e0f3c1fd49.png)  
 ![Screenshot 2025-03-17 at 6.09.14 PM](https://forum.sensor.community/uploads/default/original/2X/9/9b8c47874e6613968d50eda42e4b35db3eebb0fd.png)

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<div class="post-metadata">

### Author: ![metron6](https://forum.sensor.community/user_avatar/forum.sensor.community/metron6/32/2393_2.png) [@metron6](https://forum.sensor.community/u/metron6)
#### Post date: [March 17, 2025, 4:21pm UTC](https://forum.sensor.community/t/strange-extra-low-readings-from-sds011/4623/2 "2025-03-17T16:21:43Z")

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it cant be 🙂  
someone cleaned up the atmosphere ?  
take a look at the chart from purple air…

 ![Screenshot 2025-03-17 at 6.20.21 PM](https://forum.sensor.community/uploads/default/original/2X/f/f5600bb832622033c42de6ebe900dee7cea79b85.png)

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<div class="post-metadata">

### Author: ![metron6](https://forum.sensor.community/user_avatar/forum.sensor.community/metron6/32/2393_2.png) [@metron6](https://forum.sensor.community/u/metron6)
#### Post date: [March 17, 2025, 5:41pm UTC](https://forum.sensor.community/t/strange-extra-low-readings-from-sds011/4623/3 "2025-03-17T17:41:48Z")

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hahaha… maybe all PMs are charged electrically and went to surfaces…  
these are my sensors with readings of livingroom, bedroom, etc… 🙂

 ![Screenshot 2025-03-17 at 7.35.09 PM](https://forum.sensor.community/uploads/default/original/2X/7/79dc2dba855a5b60f5bb3cd14adc1fb6953d5cb3.png)

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### Author: ![Andhar](https://forum.sensor.community/user_avatar/forum.sensor.community/andhar/32/2537_2.png) [@Andhar](https://forum.sensor.community/u/Andhar)
#### Post date: [March 18, 2025, 5:34am UTC](https://forum.sensor.community/t/strange-extra-low-readings-from-sds011/4623/4 "2025-03-18T05:34:33Z")

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It is indeed possible to get readings like this. My sensor did the same thing yesterday (I’m in Thuringia, Germany). Even my local weather service shows similar data. It depends on the weather - with the right conditions the values can drop to such low levels (wind, weather conditions).