Hi everyone. After experience with CO2 sensors for a long time - ended up building desktop app for it. Reasons - if monitor it to close - my breathing affects it, if its to far - i ignore the data. And most important part - i don’t want or need to see numbers - just want to get desktop notification when to open a window, when air is back to normal, etc. No servers, everything is local and native with nice UI. Let me know if someone is interested as well - if yes - i will clean it up, post screenshots and share link to test flight ( or windows package)

We have a 2 foot space between our main level and finished basement where all our ductwork is ran between the engineered joists. We have 4 rooms with large windows framed with stone and block walls beneath. This space is getting mold near exterior walls. The ductwork is sweating. I believe the stone and block walls are transferring heat into this space and causing the dew point.

I’m not sure the correct way to keep this from happening. Insulate the block walls? Add hidden dehumidifiers? Foam insulation on these exterior walls? Any advice is greatly appreciated.

This is the Odak Air Monitor from Mountain Labs and I'm not sure whether I need to go for a refund here.

I have bad cat allergies and I wanted something to measure whether I can sit down with my family or maybe have to vent the air a little more.

This air monitor basically constantly has a PM value above 2 no matter where, even in a small completely open vented room with big open windows. Even funnier, the values in that room were higher than right next to my shitting cats. But never a reading above 9. So the range here is 2-9, that seems wrong. Or am I missing something obvious?

We have a 2 foot space between our main level and finished basement where all our ductwork is ran between the engineered joists. We have 4 rooms with large windows framed with stone and block walls beneath. This space is getting mold near exterior walls. The ductwork is sweating. I believe the stone and block walls are transferring heat into this space and causing the dew point.

I’m not sure the correct way to keep this from happening. Insulate the block walls? Add hidden dehumidifiers? Foam insulation on these exterior walls? Any advice is greatly appreciated.

Hi, first time poster on this sub-- I'm an undergrad who just purchased an Atmotube Pro 2 to collect data for a research project on lichen diversity and air pollution. While the focus of my project is PM, I'm also interested in this model's ability to detect NOx. I understand that it cannot detect NOx emissions with any sensitivity, and instead maps detections to an index (1-500) based on a moving window of baseline emissions. I have no expectations for getting useful data on NOx emissions. Still, if it happens to detect NOx at one of my survey sites, that could be useful info.

I spent a few hours today fiddling with this thing. It seems to work great except that I could not get it to pick up any NOx emissions at all. I held it next to my car exhaust pipe and then next to the burner of my stove while the pilot light was on. The index was at "1" the whole time even while CO2 and VOCs went off the charts.

Was curious if anyone who has used this model could weigh in on why it might not be picking anything up.

Hello,

Male / 32 years old / No medical history.

I have some questions about the burning season in Thailand.

I’m planning to go to Chiang Mai, in northern Thailand, to study for a little over two months.

As it turns out, my stay falls right in the middle of the burning season. After going through forums and various websites tracking air quality in the area over the past few years, I’m wondering how dangerous or risky it would be to stay there for two months (from late January to late March).

Should I expect any potential health effects after returning to France, or even in the long term?
I don’t really know much about this topic, so I’d really appreciate the opinions and expertise of anyone who can shed some light on the matter.

Also, are masks specifically designed to filter PM2.5 particles actually effective? Can wearing one provide some reassurance and help reduce the risks?

Thanks in advance for your feedback!