Pollen Forecast Manchester — September 22, 2026

Today's Pollen Levels in Manchester

Today's Forecast Conditions

7-Day Pollen Forecast for Manchester

Pollen Season in Manchester

Manchester's mild, wet maritime climate gives it a long but often interrupted pollen season. Things start early: hazel and alder can release pollen in January and February, particularly along the Mersey Valley and the canal corridors. Birch is the dominant tree allergen, widely planted in suburban streets and parks, and runs from late March to mid-May with a sharp peak in the second half of April; ash, willow, oak and plane fill in around it. Grass is the main problem for most Mancunians, building from late May and peaking from mid-June into July. The Cheshire Plain to the south and west is dairy and silage country, and the prevailing south-westerlies carry that grass pollen straight over the city. Heaton Park, Platt Fields, Alexandra Park, Wythenshawe Park, Chorlton and Sale Water Parks and the Fallowfield Loop all have large unmown grass areas. Nettle and dock follow through July and August, and damp late-summer conditions favour mould spores such as Cladosporium and Alternaria. Frequent rain is the local advantage: showers wash the air clean, though the muggy days afterwards can rebound hard.

• Use Manchester's rain to your advantage — the hours during and just after a downpour are the cleanest air you'll get, while the warm, still day that follows is usually the worst.
• If you run or cycle the Fallowfield Loop, the Mersey Valley or around Sale Water Park in June, go early morning rather than late afternoon and evening, when grass pollen settles back down at street level.
• Keep bedroom windows shut on warm, breezy south-westerly days in June and July, when air is arriving off the Cheshire farmland, and ask a pharmacist about starting a preventive routine a couple of weeks before your usual peak.