No, it is the Sunnah for the pilgrim NOT to fast on the Day of Arafah, so that he stays strong for du'a and dhikr in that great standing. When people at Arafah doubted whether the Prophet was fasting, Umm al-Fadl sent him a cup of milk, which he drank in full view while mounted on his camel. For those who are not performing Hajj, however, fasting the Day of Arafah is strongly recommended and expiates the sins of the year before and the year after.
Evidence — the daleel
Sahih Muslim 1123 ṢaḥīḥSahih Muslim 1162 Ṣaḥīḥ
On deen2u
Informational, not a personal fatwa. Consult a qualified scholar for rulings on your situation.