Pollen Count Sheffield Today: Hay Fever Forecast

Tuesday 13 October: the pollen level in Sheffield is low (CAMS model forecast). The most common pollen in the air is grass: 0 grains/m³ as a daily mean. The UK pollen season is essentially over; the next one starts with hazel and alder in January to March. Wednesday: low. Thursday: low. Friday: low.

Alder

low · 0

Birch

low · 0

Grass

low · 0

Mugwort

low · 0

PM2.5

3.4 µg/m³

4.6 µg/m³

3.8 µg/m³

3.4 µg/m³

Max temp

15.9°C

15.6°C

18.5°C

Rain

1 mm

0 mm

0.1 mm

Bar height is the level (low, moderate, high, very high); the number is grains/m³. Tap a day to see its wind on the map.

CAMS model forecast from 13 October at 01:00 BST, weather from the ECMWF model run of 13 October at 07:00 BST. Model values are shown unchanged; this is not a measurement or an official forecast.

Level scale (daily mean concentration, grains/m³; US National Allergy Bureau scale, AAAAI, as the UK has no open national scale): trees moderate from 15, high from 90, very high from 1500; grass from 5, 20 and 200; weeds (mugwort) from 10, 50 and 500. People with hay fever can have symptoms at low levels too.

Hay fever in Sheffield

Sheffield is one of England's most wooded cities, built on seven hills with the Peak District moors to the west. That makes April and May a strong tree season, with birch and oak from the valleys and parks. Grass pollen follows from late May to July. Its hills and moors run cooler than the lowland cities to the east, so the season can start a few days later than in Nottingham, and westerly winds off the moorland often bring cleaner air.

Air quality in Sheffield

CAMS forecasts a daily mean of 3.4 µg/m³ of PM2.5 today, below the WHO 24-hour guideline of 15 µg/m³. Air pollution can make hay fever and asthma symptoms worse. Official forecast: Defra UK-AIR.

When plants release pollen

Pollen calendar and where the data comes from

A typical UK year: hazel and alder from January to March, birch from late March to mid-May (the main tree allergen, about one in four hay fever sufferers react to it), grass from mid-May to July, usually in two peaks (early to mid-June and early July), and weeds such as nettle, dock and mugwort from June to September. Scotland runs about two weeks behind the south of England. CAMS does not model hazel, nettle or plane tree.

CAMS (a European ensemble of models, median) computes every hour how much alder, birch, grass, mugwort, ragweed and olive pollen is in the air over Europe, on a grid of about 10 km, four days ahead. On the map, particles start where the model puts pollen in the air today and drift on the ECMWF wind. UK pollen calendar

Pollen count Sheffield today: hay fever forecast for 4 days

Hay fever in Sheffield

Air quality in Sheffield

When plants release pollen

Official sources

Other UK cities