IQAir [AirVisual Pro Air Quality Monitor] Monitor Indoor Air Quality [PM2.5, CO2, AQI, Temperature, Humidity] Real-Time Air Quality & Forecasting, Historic Data, IFTTT: Amazon.com: Industrial & Scient

I’ve been getting worried about the increase in vehicle traffic on the major roads near my house and also on my own street. I have noticed when I step out front, or back, I get a blast of car exhaust blowing toward me. There are many renters in one house, with several cars, usually idling, plus Ubers and deliveries.
I have Dyson products in my house but I was concerned (more for my dogs!) that when they are outside, they are not inhaling all this pm 2.5!
My government-air-quality station is a few kilometres from me and, sure, general AQ is nice to know, but where I am actually located can have much different AQ than that station obviously.
What’s nice about this is I can put it on my deck while I am outside and see what the pm 2.5 levels are, and as soon as I bring it inside the pm 2.5 returns to zero again. I have tested this against my Dyson with the door open and it’s accurate. In fact IQAir was the most accurate in a comparison of consumer-grade AQ monitors, and for the price was surprisingly close to the accuracy of government monitors (within 5% I think).
Anyway, I use this inside the house, and I have AQ OUTDOOR for permanent measurements outside (mounted on a front-yard tree) which I love even more. That one lets me know when is the best time to go outside. It’s so interesting seeing what the trends are, and how meteorological conditions and wind improve or worsen AQ.
Both modules have continuous monitoring or by the hour. The app is great and instantaneous. Both store historical data which you can share on the iq air map.
I’m really happy with IQair and my third product will be the Atem for the car. If I can afford another AQ Outdoor for the deck I will get one. (You don’t want to open your windows when AQ is bad, and your nose can’t always tell).
Where I live it’s just cars and cars and I want to be conscious of having clean air for my pups to enjoy, and it benefits me too.