Pollen is moderate in BT (Belfast) today.

BT covers part of Northern Ireland and follows its regional pollen pattern closely.

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

Tree pollen typically peaks in April. Grass counts are highest from June. Birch and alder are the headline tree triggers; the grass season is shorter than in southern England.

For the wider regional view see Northern Ireland.