That's pretty normal in a home. The sensor of my Xiaomi air purifier always shows similar levels. But one time there was a slight smell of burning outside (a little bin fire 100m away) and it immediately went to 200+ despite there not being visible smoke.

Also, my await lite tracks the graph of the Xiaomi pretty well. I guess most fine dust comes from outside. Unless you're frying or 3D printing which elevates levels here in my house for sure.

Yet you spam an affiliate link.

Mods, please take a look at this user's comment history, it seems like spam is their main purpose...