A new Harvard-Harris poll put Mr Trump’s positive rating at 48 percent, with President Biden trailing behind at 46 percent. This comes less than a year after Mr Biden replaced Mr Trump in the White House.
The poll also highlighted a negative view of Mr Biden’s administration, with 55 percent believing that Mike Pence was a more effective vice-president than Kamala Harris.
Nearly two-thirds of respondents also said that Mike Pompeo was a better secretary of state than Antony Blinken.
The results come in the wake of the US withdrawal of Afghanistan, widely condemned as disorganised and disappointing.
Criticism of President Biden’s handling of the crisis in Afghanistan increased after 13 US servicemen were killed in a suicide bombing at Kabul airport at the end of August.
READ MORE: Kamala Harris shuns responsibility for US/Mexico border chaos
This is magnified by soaring coronavirus cases across the US and slow progress of Democrat reforms through Congress.
US immigration has also stayed in the headlines in recent weeks, with graphic images emerging from the US border with Mexico.
Those fleeing the political turmoil and the aftermath of the Haitian earthquake have been arriving at the US border.
But last weekend the US started deporting those staying in a border town in Texas, where around 13,000 migrants had created a makeshift camp underneath a bridge.
At its highest, his approval rate reached 57 percent.
Among Democrats, his approval rating has dropped eight percentage points, compared to the beginning of 2021.
It is also the first time a majority (53 percent) of respondents disapproved of his actions as president.
The Harvard CAPS-Harris Poll survey of 1,578 registered voters in the US between September 15 to 16.
Gallup surveyed a random sample of 1,005 adults, aged 18 and older from 50 US states and the District of Columbia between September 1 to 17, 2021.