An Economist/YouGov poll of 1,500 registered voters from June 11-13 showed 42 percent approval. A June 9-15 Survey Monkey poll of adults showed 43 percent. Gallup, which polls all adults on a three-day rolling basis, most recently showed 39 percent approval.
When you look at polling more broadly, Rasmussen really sticks out.
The RealClearPolitics.com average of polls from May 30-June 17 shows 40 percent job approval - a full 10 percentage points lower than the rate Trump touted in his tweet. FiveThirtyEight performs a similar comprehensive reflection of polling data, and it came in even lower - 38.7 percent approval (and 55.4 percent disapproval) by Trump’s 150th day in office.