Need help programming air pollution sensor

please help me, i have a problem i have idea to make reading the air polution in the my city, nah, my problem is i dont know how to create program for microcontroller to blynk app, i hope you can help me, thanks you.
my email

I moved your question to your own topic.

We don’t teach programming here, but Google around for other sites that do offer free programming training.

Meanwhile there are links (Documents, Help Center & Sketch Builder) at the top right of this page that will assist you in learning how to use Blynk.