The Environment Agency says oxygen levels in Grantham Canal have now returned to normal after the deaths of hundreds of fish.
They were first called to the waterway yesterday and found oxygen levels at around 20%. Since then they have been pumping chemicals into the water to increase the oxygen concentration.
Test have now showed that the oxygen has returned to its normal level. It is believed the recent hot weather, leading to an increase in weed growth, had caused the drop.
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It will be largely dry but some fog may be slow to clear.
Any fog patches slow to clear during the morning.
The Fire and Rescue service were called to Lynmouth Close in Leicester on Friday night.