I am new at both node-red and MQTT protocol. I use mosquito as a broker in my local computer.
I want to observe my values remotely. By saying remotely, i mean outside of node-red dashboard. I guess i need to use a web service in order to accomplish that.
My question is that is there a free web service that i can use to see my published MQTT values?
Do you mean on your local network or from an external location?
If on your local network then as @Colin and @molesworth suggested use mqtt explorer. If outside your local network then use a cloud based MQTT broker and you should be able to see data on their site.