Pollen count in Portland

• Thursday 😐
  Birch: 58.7 g/m³
  Grass: 1.2 g/m³
  
• Friday 😐
  Alder: 0.5 g/m³
  Birch: 28.5 g/m³
  Grass: 0.9 g/m³
  
• Saturday 😐
  Birch: 15.7 g/m³
  Grass: 5.8 g/m³
  
• See our chart for an hourly overview.

• 4-Day Chart
• Annual Overview

In Portland, UK, trees start releasing pollen in late March. This is the start of pollen season. Trees like oak, birch, and hazel are the main culprits.

In May, grasses start pollinating. This adds to the pollen count. The mix of tree and grass pollen makes May the worst month for pollen levels.

In June, grasses are still pollinating, but the tree pollen count goes down. This means the pollen count is still high, but not as bad as May.

By July, pollen levels start to drop. The pollen season slowly comes to an end. Autumn and winter have very low pollen counts, making them a relief for people bothered by pollen.

Chart

Recommendations

When pollen counts are high, we suggest doing these things to help with allergies, especially on windy days when pollen is flying around.

• Wear masks if necessary
• Shower after going out
• Wear sunglasses if windy
• Close windows and doors
• Use an indoor air purifier
• Avoid wearing woolen clothes outside
• Limit outdoor activities

Annual Pollen Overview

Check out this month-by-month overview of the daily average pollen count in Portland 🌾. This data is based on previous years and serves as a guideline to help you understand when different pollen seasons typically occur in your city.

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