I think it's difficult to make an electronic sensing device that logs data locally but isn't a little DIY. There's not a great standard for passing around data on a local network. Perhaps the best way to do this from a consumer device would be to log to a USB stick.
You asked for something that's not DIY at the hardware level, though, so I think something like the AirGradient Pre-Soldered kit would be perfect for you[1].
You'll get an Arduino connected to top-of-the-line sensors that can be flashed with your SSID to connect to your local WiFi network. Once connected, the device exposes an HTTP endpoint you can GET for the status of each sensor[2].
I've been thinking a lot about indoor air quality[3] so if this setup works for you I'd love to know!
1. https://www.airgradient.com/open-airgradient/shop/#!/DIY-Pro...