Around 30 per cent of Irish people suffer from the allergy.
Faster, more accurate pollen forecasts will soon allow hay fever sufferers to be more prepared for bad days.
Researchers are using lasers to analyse the material that causes sneezing, sore eyes and headaches.
Around 380-thousand people in Ireland have asthma, and close to 80 percent of those have hay fever too.
Researchers at DCU are aiming to provide local pollen forecasts to help sufferers plan better.
Between a quarter and a third of the Irish population have some form of pollen allergy.
Dr. David O'Connor from DCU says hayfever makes a good majority of them totally miserable:
"It does affect a huge cohort of people, and then if you've got asthma it can trigger asthma attacks".