Worst air pollution Neath, today and tomorrow
Today (20 September): Air quality in Neath is fair. AQI, PM2.5, PM10, NO2, and PM1 are fair; O3, SO2, CO, and HCHO are good. Pollution peaks around 10:00 PM (PM1: 39.8/100).
Tomorrow (21 September 2026): Air quality in Neath is moderate. AQI worsens to moderate; PM2.5 increases to moderate; PM10 increases to moderate; NO2 increases to moderate; PM1 increases to moderate; all other pollutants stay as today. Pollution peaks around 10:00 PM (PM1: 55.7/100). Airmine updates local air quality forecasts four times daily.
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Emissions along the A40 represent the town's main traffic-related pollution source. Like much of Neath Port Talbot, Neath's air quality is shaped less by industry these days and more by everyday road traffic. Prevailing westerlies do most of the work keeping things in check, more so than any local policy or infrastructure change.
Today - 20 September | Pollution peaks at 22:00
AQI:
Fair
39.8/100
PM2.5 (fine particles):
Fair
34.2/100
PM10 (coarse particles):
Fair
24.8/100
NO2 (nitrogen dioxide):
Fair
33.2/100
O3 (ozone):
Good
16.2/100
SO2 (sulfur dioxide):
Good
5.6/100
CO (carbon monoxide):
Good
0.9/100
HCHO (formaldehyde):
Good
8.3/100
PM1 (ultrafine particles):
Fair
39.8/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 22:00
AQI:
Moderate
55.7/100
PM2.5 (fine particles):
Moderate
47.9/100
PM10 (coarse particles):
Moderate
42.3/100
NO2 (nitrogen dioxide):
Moderate
51.6/100
O3 (ozone):
Good
18.5/100
SO2 (sulfur dioxide):
Good
13.3/100
CO (carbon monoxide):
Good
1.6/100
HCHO (formaldehyde):
Good
19.8/100
PM1 (ultrafine particles):
Moderate
55.7/100
Pollen forecast in Neath
View pollen forecastFrequently Asked Questions
Is air quality bad in Neath right now?
On 20 September 2026, overall air quality in Neath is fair. AQI is the main air quality indicator at 39.8/100. Pollution peaks around 10:00 PM (PM1: 39.8/100).
Will air quality be worse tomorrow in Neath?
On 21 September 2026, air quality conditions in Neath will be worse than today, with AQI forecast at moderate at 55.7/100. Pollution peaks around 10:00 PM (PM1: 55.7/100).
When is air pollution at its worst in Neath?
In Neath, pollution levels don't stay flat — winter and summer look pretty different. Warmer months swap one problem for another — less smoke and heating pollution, but more ozone on the sunniest days. In deep winter, a lack of wind lets A40 traffic fumes and woodsmoke settle instead of blowing through. Spring and autumn usually sit somewhere in between, so it's really the extremes of the year worth watching.
Are air quality levels in Neath 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: 20 September 2026 at 14:33 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.
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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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