Pollen is low in Sheffield today.

Hayfever sufferers in Sheffield should track all three pollen types from March through August.

Tree pollen here is dominated by silver birch, oak and ash, with grass led by ryegrass and cocksfoot and weeds by nettle and plantain.

Tree pollen typically peaks in April. Grass counts are highest from June. Birch is a notable trigger here in April; grass takes over by mid-June.

For the wider regional view see Yorkshire and the Humber.