Melbourne spring pollen levels trigger respiratory issues for many residents
Melbourne air quality data shows high grass pollen counts from October to December cause seasonal asthma and hay fever.
Pollen sources remain unidentified
Current monitoring systems can distinguish grass pollen from other types but cannot identify the specific grass species producing it. Microscopic examination shows all grass pollen looks fairly similar, so experts do not know if a single type or many types are responsible.
Treatment choices depend on data
Some grasses are far more allergenic than others, meaning knowing the exact pollen exposure helps allergists choose the best treatment. Daily measurements published from October to December allow hay fever sufferers to track what they are breathing.
Storms worsen respiratory events
Severe spring storms can trigger thunderstorm asthma events that hit Melbourne on average once every seven years. These weather patterns combine with high pollen loads to increase respiratory conditions for about one in five Melburnians.
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