About

ispollenhigh is a small, fast site that answers one question: is pollen high in your area today? It is independent and free to use. There are no ads and no upsells.

Where the data comes from

Live readings come from the Google Pollen API. Google's pollen infrastructure is itself derived from atmospheric models including the Copernicus Atmosphere Monitoring Service. When the Google service is unavailable we fall back to Open-Meteo, which uses the same CAMS data directly.

Forecasts are indicative. Local conditions vary by exact location, time of day and weather. Use the site as one input alongside how you actually feel.

How to read the levels

We split today's reading into grass, tree and weed pollen, then give each one a level from none through to very high. Most British hay fever is triggered by grass pollen, which peaks from late May through July. Tree pollen peaks earlier in spring. Weed pollen runs longest, into autumn.

Who built this

ispollenhigh is built and run independently. It is not affiliated with the Met Office, the NHS or any commercial weather provider. The fast, mobile-first design is the point: when you wake up streaming and want a straight answer, you should get one in under two seconds.

Why this is free

I built this for my son. He gets hay fever badly and through the summer my wife would ask me every morning whether he needed his medicine before school. Finding out took longer than it should have, so I made something that answers in about two seconds. I use it for my own hay fever now too.

There are no adverts and no paywall. There never will be. I pay for the domain, the hosting and the pollen data myself. If it has saved you the same morning guesswork, you can buy me a coffee. A coffee goes towards the running costs.

Get in touch

Spotted a problem with a reading or a postcode area? Let us know via the project on GitHub.