Get data from purpleair sensor without registration

Hi everyone,
I’m a newbie in the community so this question may be very silly. I wonder if there are ways to get data from purpleair sensor without registration or when wifi is unavailable for the sensors? Without wifi, we can still access the sensors and their readings through LAN so are there ways to query the measurements locally?
Thank you!

To retrieve sensor readings averaged over 2 minutes, query the /json endpoint on the sensor’s address. Use ?live=true to get real-time values. Note that not all the same data is available locally as is through the API.