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By 11:00, more than 450 lightning strikes had been recorded since the activity began.

Updated at 11:30, 20 July

The eruption at the Sundhnúkur crater row has caused significant air pollution in recent days, with volcanic haze spreading widely but not fully captured by the national air quality monitoring network. The Icelandic Meteorological Office forecasts gas pollution in South and West Iceland over the coming days, with light winds contributing to persistent haze, especially in the southwest. Vulnerable groups are advised to limit time outdoors if they experience discomfort, and practical guidance for reducing indoor exposure is provided.

The flood is subsiding, and water level and conductivity are now approaching normal values in Skálm.

The flood reached its peak the night before last. IMO´s specialists continue to observe the area

In May 2025, an unusually intense heatwave struck Iceland and eastern Greenland, breaking numerous temperature records. On 15 May, Iceland's national May temperature record was set at 26.6°C at Egilsstaðir Airport, with several locations recording temperatures up to 13°C above the monthly average.

A new international analysis by the World Weather Attribution group shows that human-induced climate change made this heatwave around 40 times more likely and, on average, three degrees Celsius hotter than it would have been without global warming. The study also suggests that if global temperatures rise by 2.6°C, such heatwaves could become at least twice as frequent and two degrees hotter.

Temperatures reached or exceeded 20°C at several weather stations for 10 consecutive days.

May temperature records were repeatedly broken at weather stations across the country. 

A new national May temperature record of 26.6°C was set at Egilsstaðir Airport on May 15^th.