You should be concerned as many research shows: * leaving close to a busy road raises the risk of early dementia [1] * higher risk of asthma * cardiac arythm

You should be concerned as many research shows: * leaving close to a busy road raises the risk of early dementia [1] * higher risk of asthma * cardiac arythmia I could go longer but don't want to get too dark For your situation, I think a laser egg from kaiterra is a good machine, you can bring it around and is reliable on the long run. They use a plantower sensor (mentioned in another comment) but have their own firmware on to interpret the readings. I know the founder of kaiterra personnaly so I might be biased but I'm not the only one in the industry recommending it for home use. The laser egg 2 is also measuring TVOC but is a bit more expensive, you might want to look into that. Overall a good and reliable machine for this price. You would also like to consider PM10 in Australia, from memory, the dryness of the country and heavy farming in certain areas was producing a lot of bigger particles. You can also track public data on sites like aqicn.org [2] or openAQ [3] (though the data looks sparse for Australia there). [1] https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(16)32399-6/fulltext https://www.thelancet.com/journals/lancet/article/PIIS0140-6... [2] http://aqicn.org/map/#@g/-37.8328/144.8348/11z http://aqicn.org/map/#@g/-37.8328/144.8348/11z [3] https://openaq.org/#/map?_k=ej77x9 https://openaq.org/#/map?_k=ej77x9