Worst air pollution Llandudno, today and tomorrow
Today (16 July): Air quality in Llandudno is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 PM (O3: 28.4/100).
Tomorrow (17 July 2026): Air quality in Llandudno is fair. All pollutants stay as today. Pollution peaks around 2:00 PM (O3: 29.3/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Commuter traffic feeding onto the A55 adds a further, consistent contribution to local readings. Like much of Conwy, Llandudno's air quality is shaped less by industry these days and more by everyday road traffic. Cooler northerly winds do most of the work keeping things in check, more so than any local policy or infrastructure change.
Today - 16 July | Pollution peaks at 15:00
AQI:
Fair
28.4/100
PM2.5 (fine particles):
Good
11.1/100
PM10 (coarse particles):
Good
3.9/100
NO2 (nitrogen dioxide):
Good
9.9/100
O3 (ozone):
Fair
28.4/100
SO2 (sulfur dioxide):
Good
2.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.8/100
PM1 (ultrafine particles):
Good
8.6/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 14:00
AQI:
Fair
29.3/100
PM2.5 (fine particles):
Good
14.7/100
PM10 (coarse particles):
Good
5.3/100
NO2 (nitrogen dioxide):
Good
13.4/100
O3 (ozone):
Fair
29.3/100
SO2 (sulfur dioxide):
Good
3.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.1/100
PM1 (ultrafine particles):
Good
11.8/100
Pollen forecast in Llandudno
View pollen forecastFrequently Asked Questions
Is air quality bad in Llandudno right now?
On 16 July 2026, overall air quality in Llandudno is fair. AQI is the main air quality indicator at 28.4/100. Pollution peaks around 3:00 PM (O3: 28.4/100).
Will air quality be worse tomorrow in Llandudno?
On 17 July 2026, air quality conditions in Llandudno will be similar to today, with AQI forecast at fair at 29.3/100. Pollution peaks around 2:00 PM (O3: 29.3/100).
When is air pollution at its worst in Llandudno?
Ask a local in Llandudno and they'll tell you air quality changes noticeably from season to season. Summer sunshine can drive up ozone locally, though overall air generally moves and clears more freely than in winter. Through the colder months, readings near the A55 often rise, since chimney smoke and stagnant air stop pollutants clearing away. Most of spring and autumn stays fairly steady, right in the middle of those two extremes.
Are air quality levels in Llandudno based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Want to see air quality forecasts for other cities in United Kingdom?
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app