On Tuesday, Croatia recorded a further 199 cases of coronavirus.
This is up from 85 the previous day.
If this number of cases continues to be reported daily over a one-week period, this would be the equivalent of 47.8 cases per 100,000 people.
A review of the quarantine-free list is expected on Thursday.
But Croatia isn’t the only popular holiday destination that could be at risk of being removed from the “air bridge” list.
Greece and Turkey could all also be placed on the list following a spike in coronavirus cases.
They would join Spain, France, Belgium, the Netherlands, Malta, Monaco, Andorra, Luxembourg, The Bahamas, Turks and Caicos and Aruba which have already been removed.
However, Greece’s case rate is 13.8 per 100,000 people, putting it well below the UK’s quarantine threshold.
Turkey’s case rate currently sits at 10.4 per 100,000 people.
No announcement has been made that Croatia will be removed from the FCO’s exemption list.
However, there have been reports indicating that this could soon be the case.
Croatia has had a total of 6,855 cases of coronavirus and 166 deaths.