Approval data from Reuters/IPSOS

Biden's approval rating is down to 46% from 53% after the Afghanistan pullout, according to Reuters/IPSOS. That's the lowest since he took office.

Here's the trend in the data, though the chart hasn't been updated:

Approval data from Reuters/IPSOS

For comparison, Trump's average approval was 41%, Obama's was 47.9% and G.W. Bush's was 49.4%.