General Outlook: Wednesday: Rain is forecast to move north across Ireland, with clearer showery conditions following. Generally low pollen counts expected in Leinster and Connacht, but there is a risk of grass pollen counts increasing to moderate in Ulster and Munster. Thursday: Another showery day. There is a risk of grass pollen counts increasing to moderate where it remains dry and bright for long periods, but rain will cause counts to decrease. Grass pollen affects about 95% of hay fever sufferers. Many sufferers may experience symptoms of hay fever when grass pollen counts are moderate, and low grass pollen counts may cause hay fever symptoms in sensitive individuals. Low to moderate concentrations of pollen from allergenic weeds (e.g. dock, plantain and nettle) are also likely to be in the air when conditions are suitable. Weed pollen affects about 20% of hay fever sufferers.