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Airgradient: First air quality monitor to be officially compatible with Home Assistant
(www.notebookcheck.net)
this post was submitted on 07 Sep 2025
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$230... the sensor monitors:
vs IKEA sensor (VINDSTYRKA for $60).
Fine enough product I suppose... but not sure that those 2 other sensors would ever be worth $170 more for me, especially since I have a CO2 monitor on one of my fire alarms on each floor... and those alarms have a z-wave relay on them. Especially since it's wifi and I prefer zwave/zigbee to keep the wifi less cluttered. The real site (https://www.airgradient.com/indoor/) mentions pm1 and pm10 but only in like one place and doesn't go into detail on that sensor in use or anything like that. So not sure about that. 2A power adapter requirement (non-included) seems excessive as well... They do claim that they will never lock in, that nice. They support their own software though... so there's always that risk I suppose of any ol' firmware update locking it down, though the certification hopefully proves that this won't happen. I bet it's more accurate than the VINDSTYRKA, but I'm not sure how much accuracy people actually need vs just monitoring the trend and triggering on spikes.
I'm more interested in finding an outdoor unit since air quality isn't often part of any weather station setup. This company has outdoor units, but they're all cellular and way expensive. Anyone know of a good outdoor unit?
Don't fire alarms look for CO?
Just to be clear because I don't want anyone to read this and take it as fact...
Smoke detectors detect smoke by looking for particles.
Some devices are combo Smoke/Carbon Monoxide (CO) detectors. They cost more but it's good to have both and it's easier to have fewer devices.
You can also get stand alone Carbon Monoxide detectors and absolutely should. It's odorlesss and very deadly and is produced by burning gas/oil/propane or whatever else you burn to heat your house.
The problem with the combo ones is that CO is heavy and goes the the ground and smoke rises with heat. So CO alarms should be low and smoke alarms high.
I've quickly skimmed 3 articles on the subject just now, and the consensus is it just mixes evenly with air. It'll naturally be more concentrated near the source, but there's tons of air flow in a house especially when the heat is on. One article even said CO is lighter than air (bit not enough to separate and rise on its own).
I was a little skeptical and just looked at NFPA codes (USA) and they don't seem to care about placement elevation, only type of rooms and heating sources. I didn't read all 68 pages, only what seemed relevant, so maybe I missed some discussion.