Worst air pollution Bala, today and tomorrow
Today (9 August): Air quality in Bala is fair. O3 and PM1 are fair; AQI and NO2 are medium; PM2.5, PM10, SO2, CO, and HCHO are good. Pollution peaks around 6:00 AM (NO2: 53.8/100).
Tomorrow (10 August 2026): Air quality in Bala is fair. AQI worsens to fair; NO2 increases to fair; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 2:00 AM (NO2: 33.6/100). Airmine updates local air quality forecasts four times daily.
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Commuter traffic feeding onto the M4 adds a further, consistent contribution to local readings. Like much of Gwynedd, Bala's air quality is shaped less by industry these days and more by everyday road traffic. Thanks to shifting coastal winds, pollution rarely lingers for long, which keeps average readings fairly unremarkable by UK standards.
Today - 9 August | Pollution peaks at 06:00
AQI:
Medium
53.8/100
PM2.5 (fine particles):
Good
16.9/100
PM10 (coarse particles):
Good
4.7/100
NO2 (nitrogen dioxide):
Medium
53.8/100
O3 (ozone):
Fair
38.7/100
SO2 (sulfur dioxide):
Good
13.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.0/100
PM1 (ultrafine particles):
Fair
21.4/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 02:00
AQI:
Fair
33.6/100
PM2.5 (fine particles):
Good
8.9/100
PM10 (coarse particles):
Good
3.2/100
NO2 (nitrogen dioxide):
Fair
33.6/100
O3 (ozone):
Fair
24.5/100
SO2 (sulfur dioxide):
Good
9.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.1/100
PM1 (ultrafine particles):
Good
6.7/100
Pollen forecast in Bala
View pollen forecastFrequently Asked Questions
Is air quality bad in Bala right now?
On 9 August 2026, overall air quality in Bala is fair. O3 is the main pollutant at 38.7/100. Pollution peaks around 6:00 AM (NO2: 53.8/100).
Will air quality be worse tomorrow in Bala?
On 10 August 2026, air quality conditions in Bala will be similar to today, with AQI forecast at fair at 33.6/100. Pollution peaks around 2:00 AM (NO2: 33.6/100).
When is air pollution at its worst in Bala?
Here's the thing about Bala: air quality has a clear seasonal rhythm. Once the heating goes on and the air turns still, pollution from the M4 and nearby chimneys tends to build up rather than clear. Summer's more of a mixed bag: ozone can spike in strong sun, but overall dispersion tends to be better than the depths of winter. The shoulder seasons generally bring the mildest readings of the year.
Are air quality levels in Bala 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 10 August 2026 at 02:34 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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