Several people have posted on social media after experiencing the apparent glitch on their iPhone operating system when the weather app showed 'unsafe air quality levels' in recent days. 

A spokesperson from Environmental Health and Pollution Regulation confirmed a weather app on certain mobile phones was indicating unhealthy air on the island. 

Pictured: Comments on Facebook about the iPhone glitch in Guernsey recently.

 “It has recently been brought to our attention that a weather app provided on mobile phones is displaying information about 'local' air quality.  Recently the app has indicated that the air quality in various parishes is unhealthy.

"Our understanding is that this information is completely inaccurate. We have two permanent air quality monitoring stations (Bulwer Avenue, St Sampson and Lukis House, St Peter Port) that are capable of providing live data and neither of these relate to parishes that have been identified.

"Live data from these sites are available via this weblink guernseyair.ricardo-aea.com which is also provided via the gov.gg website and is publicly accessible. We do not provide any app provider with these data and therefore there is no apparent way that the data on the app represents these sites. We have also cross-referenced the data from the app with our live data and it is not representative of the air quality levels that we have monitored."

There are 11 diffusion tubes around the island which provide data on a monthly basis but none of these provide live data.

"We have tried to contact the app provider as this has been raised as an issue before but, to date, we have not received any explanation from the company. It is possible that the app uses geographic positioning and links the position with the nearest air quality monitoring station on a public system. If this is true it could be related to air pollution levels in France or the UK. Alternatively the app may be using an algorithm or proxy data to estimate pollution levels. Either way, we believe that this is highly misrepresentative of the actual local position and that islanders should refer to live data from the link rather than using the information displayed on the app.

"We are continuing to contact the relevant parties related to the app to determine how this information is provided and to try to remedy this matter.” they said. 

Last summer several European countries reported similar issues with the app.