This question really depends on the standards your school employs for promotion and tenure.  At my school, CVs are not required to provide impact factors.  As Ian says, if committee members choose to check, they will see the journal's current statistic (or claimed statistic, in the case of predatory journals).

Whatever you put in your CV should be currently verifiable, so I would not recommend citing historical impact factors. Still, as there are so many impact factors, and because they all relate to the journals, and not to your papers, and because there is so much variation between disciplines, I really would not recommend listing the impact factors of any of the journals.

If you wish, you can omit to mention papers you have published in the popular press. 

This question really depends on the standards your school employs for promotion and tenure.  At my school, CVs are not required to provide impact factors.  As Ian says, if committee members choose to check, they will see the journal's current statistic (or claimed statistic, in the case of predatory journals).

Thanks a lot Kennedy sir!

Thanks Sir Michael!

I agree with the above answers. Journal impact factors are generally not needed in CVs; however always use the current one when asked for.

Dear Adry, definitely the impact factor when your paper was published. That counts. 

I agree that it depends on your institution. Some ask to see what the impact factor of the journal was at the time that your article was published; others ask for the current impact factor of the journal. If your institution wants to know what the impact factor was at the time that you published an article, it may save you time later to go ahead and collect that information each time you publish now so you don't have to go back and ask all the publishers for the journals you've published in for the historical impact factors later.

Hello Lucinda I am confused regarding your last sentence, whether you supported the current IF of a journal to be mentioned or not?

You can help me out regarding this point.

 Dear Lucinda you can check first two opinions given by Kennedy & Marek, I think they are helpful.

Hi Adrij, similar to Michael Marek's comment, I was saying that it may depend on what your individual institution or university requires for tenure or promotion (either the current impact factor or what the impact factor was at the time at the time you published).