"We are still in a territory where the Swiss franc is high," Maechler told an event in Geneva. "More generally, how is it (the franc) going to go further? I don't know. I don't know where the Swiss franc is going to go."
"The reality is, we continue to have a safe-haven currency," Maechler said. "Uncertainties remain high, largely because of the COVID crisis which continues to be there."
Maechler repeated the SNB's commitment to currency market interventions to check the rise of the franc, which recently hit its highest level against the euro since May 2020.
Modest Swiss inflation, which has risen to around 1.2%, helped take the edge off the franc's rise and reduce the damaging effect the currency's strength has on Switzerland's export-orientated economy, she said.
"You've seen recently there has been quite an appreciation of the Swiss franc," Maechler said. "Now if you look at the real exchange rate, it's still higher than 2015,.
"It is something that we do continue to monitor, and we will continue to do so."
The SNB remained committed to forex market purchases where appropriate, seeking to have the maximum impact with the minimum intervention, she said.
On its investments it bought with foreign currencies however, the SNB sought to have the minimum market impact, Maechler added.
(Reporting by Paul Carrel, Writing by John Revill)
