Spring is finally here, and we all love the sunshine. But let’s be honest, the season has a bit of a PR problem. We often forget about the microscopic cloud of particles floating right along with that fresh breeze. If your eyes are itchy and your nose won’t stop running, particulate matter is likely the real culprit.
At Coway, we believe understanding your air is the first step to finding lasting hay fever relief. Let’s look at what is actually swirling in the British spring air.
The trouble with spring air and pollen counts
When we talk about particulate matter (PM), we mean the tiny solids and liquid droplets suspended in the air. In spring, these air quality levels tend to spike as both nature and human activity reach their peak.
| Particle Type | Size (Microns) | Relative to Hair | Impact on Health |
| Human Hair | ~ 50-70 μm | (Reference Point) | None |
| Pollen (PM10) | 10 μm or less | 1/5 of a hair | Irritates nose, eyes, and throat |
| Fine Dust (PM2.5) | 2.5 μm or less | 1/20 of a hair | Deep lung & blood penetration |
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The Pollen Factor (Under PM10)
Trees and grasses release microscopic grains that are essential for nature, but a nightmare for our sinuses. According to the NHS guide on hay fever,¹ symptoms can last for months. Most pollen falls under PM10, which is small enough to be inhaled and large enough to irritate your airways. This triggers your immune system to release histamines, leading to sneezing and itchy eyes.
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The Fine Particle Challenge (PM2.5)
These are the real troublemakers. PM2.5 particles are smaller than 2.5 micrometres, meaning they travel deep into your lungs and can even enter your bloodstream. In the UK, these often come from vehicle emissions in our busy towns and construction dust. You can check current pollution levels via the DEFRA UK-AIR website.² You cannot see them, but your body certainly notices them.
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Outdoor Debris
Whether it is through open windows or on the bottom of our shoes, we track in soil and mould spores. In fact, research shows that about two-thirds of indoor dust actually starts outdoors.³ This means that even with the windows shut, outdoor pollutants find their way into your living space.
Why home is not always a safe haven
Most people think allergies only happen outside, but indoor air can be just as tricky. Pollen clings to your clothes, pet dander stays in the carpets, and even daily cooking creates fine particles. Once inside, these irritants hang in the air until something physically removes them.
How Coway Airmega protects your home
Coway Airmega purifiers are engineered to physically capture these allergens, rather than just masking them. Our multi-stage system uses pre-filters for hair and advanced HEPA filtration to trap 99.97% of airborne particles, as small as 0.3 microns. With real-time smart sensors, the Airmega detects changes in air quality and adjusts itself automatically.
6 simple steps for an allergy-free home
01. Leave Shoes Outside
Keep outdoor allergens and soil out of your living space by leaving shoes at the door.
02. Use Extractor Fans
Always use the fan when cooking to clear fine particles and prevent indoor spikes.
03. Check Forecasts
Keep windows closed on high pollen days and check the Met Office Forecast regularly.⁴
04. Smart Air Purifying
Let your purifier handle fine dust, ensuring particles are trapped rather than spread.
05. Weekly Bedding Wash
Wash your bedding every week during the peak of the season to remove clinging pollen.
06. Strategic Placement
Place your purifier in high-traffic areas or the bedroom for maximum coverage.
Spring should be about the smell of flowers, not constant sneezing. You cannot control the wind or the pollen count outside, but you can control the air inside your home. With Coway, your home can finally feel light, clean, and easy to breathe in. Explore Coway Airmega and let your home breathe better this spring.
¹ Hay fever guide (2024). NHS official website
² Daily Air Quality Index (2024). DEFRA UK-AIR Research Portal
³ Layton, D. W., Beamer, P. I. (2009). Migration of Contaminated Soil and Dust into Houses. Environmental Science Technology
⁴ Pollen forecast (2026). Met Office official website
