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Today's air quality and, in season, pollen, in plain language — plus why Guildford has no Clean Air Zone and where the town-centre NO₂ debate stands.
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Fair Fine for being outside, including exercise, for almost everyone.
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 | 1 grains/m³ |
| Birch | Low | 0 grains/m³ |
| Day | Air quality | Grass pollen |
|---|---|---|
| Sat 5 Sept | Fair | Low |
| Sun 6 Sept | Fair | Low |
| Mon 7 Sept | Fair | Low |
| Tue 8 Sept | Fair | Low |
Guildford Borough Council looked at introducing a Clean Air Zone for the town centre and decided against it, judging the costs outweighed the benefit. There is no charging zone here — this page reads the same openly published air model used by every town on this platform, not a scheme built for Guildford specifically.
Nitrogen dioxide on the one-way system around North Street and Onslow Street has been a recurring local concern. The reading on this page comes from a wide-area model, not a monitor on that road, so treat it as the town's general air rather than a verdict on any one street.
Updated . These are modelled estimates for the area around Guildford town centre, 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: uk-air.defra.gov.uk. Air quality data by Open-Meteo (CC BY 4.0), based on Copernicus CAMS.
Fair
European Air Quality Index 21 · Guildford town centre