Residents in Colchester should prepare for a significant rise in pollen levels starting Wednesday 29 April 2026, as warm and dry spring weather conditions take hold across the region. According to the Met Office, pollen counts are forecast to increase from low to high throughout the week, reaching very high levels by Friday 1 May.
The current warm and sunny weather, which follows the UK’s warmest start to April in 80 years, has created ideal conditions for the release and spread of pollen. The Met Office explains that warm temperatures stimulate development within tree catkins, while the lack of rainfall allows pollen to build up in the air. While birch pollen remains high, oak pollen is also emerging as a significant contributor to the season in the East of England.
For the approximately 16 million people in the UK who suffer from hay fever, this shift means symptoms are likely to intensify. The forecast shows high levels on Wednesday and Thursday, peaking at very high levels on Friday when temperatures are expected to reach 21°C. Levels are expected to remain high on Saturday.
In addition to the pollen increase, residents are advised that UV levels will be moderate throughout the week. The Met Office recommends taking care during midday hours and suggests using sunscreen, as residents should avoid spending too much time in the sun unprotected.
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