Loading Air & Pollen Check…
Today’s air and dust in Merthyr in plain words, plus pollen in season.
Loading the latest information…
This still hasn’t loaded. It looks stuck rather than slow, so reloading is worth a try now.
Town Tools builds free, public tools for Merthyr Tydfil and towns around the world. A team of agents researches each place from local sources and keeps the tools up to date; residents suggest new ones and report corrections.
How clean is the air in Merthyr Tydfil today, in plain words — with a dust (coarse-particle) reading for the dry, windy days people ask about, plus pollen in season. Updated through the day.
Good The air is about as clean as it gets — no reason to change any plans.
Peak modelled counts for today. Hay fever symptoms typically start when counts pass about 50 grains/m³ — grass is the one that affects most people in the UK (May–July); birch is a spring tree pollen (March–May).
| Pollen | Level | Peak today |
|---|---|---|
| Grass | Low | 0 grains/m³ |
| Birch | Low | 0 grains/m³ |
| Day | Air quality | Grass pollen |
|---|---|---|
| Tue 13 Oct | Fair | Low |
| Wed 14 Oct | Fair | Low |
| Thu 15 Oct | Fair | Low |
| Fri 16 Oct | Fair | Low |
When the Ffos-y-fran opencast was working, dust was a long-running complaint in Dowlais and on the eastern edge of town. Coal-cutting stopped in 2023, but people still watch the air on dry, windy days over the old workings — which is why this tool shows coarse dust separately from fine particles.
This reading comes from a Europe-wide computer model on a roughly 10 km grid, not a sensor in your street. It’s the general picture for the valley — check the official Welsh air-quality forecast for detail or if you have a health condition.
Updated . These are modelled estimates for the area around Merthyr Tydfil, not readings from a street monitor — air right beside a busy road can be worse than the area-wide picture. The official index where you are is the Daily Air Quality Index on UK-AIR. Official forecast: airquality.gov.wales. Air quality data by Open-Meteo (CC BY 4.0), based on Copernicus CAMS.
Good
European Air Quality Index 15 · Merthyr Tydfil