Climate change is certainly increasing average temperatures and if this year is indicative, is also reducing rainfall. Both these factors lengthen the grass pollen season and exacerbate pollen release leading to high pollen warnings that can be seen on BBC news. This may be a sign of things to come and would suggest that steroid nasal sprays be recommended to be used from early May until the end of August. This is the usual advice I give to my patients. On "high pollen" hot days antihistamine tablets can be used. Don't forget the use of "salty water nasal sprays" such as Sterimar, which are proven to be effective. They work by simply washing out pollen, mucus and bacteria from the nose.