Worst air pollution Monmouth, today and tomorrow
Today (16 July): Air quality in Monmouth is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (O3: 31.6/100).
Tomorrow (17 July 2026): Air quality in Monmouth is fair. All pollutants stay as today. Pollution peaks around 3:00 PM (O3: 37.8/100). 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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The A483 generates consistent traffic-related NO₂ and PM2.5, particularly during peak commuting hours. Monmouth sits within Monmouthshire, and its air quality profile is driven mainly by road traffic and the density of the centre. Residential heating and light industry add a modest seasonal contribution, though the dominant maritime airflow keep overall levels moderate.
Today - 16 July | Pollution peaks at 16:00
AQI:
Fair
31.6/100
PM2.5 (fine particles):
Good
10.5/100
PM10 (coarse particles):
Good
3.8/100
NO2 (nitrogen dioxide):
Fair
21.8/100
O3 (ozone):
Fair
31.6/100
SO2 (sulfur dioxide):
Good
3.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.8/100
PM1 (ultrafine particles):
Good
9.3/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Fair
37.8/100
PM2.5 (fine particles):
Good
16.2/100
PM10 (coarse particles):
Good
5.6/100
NO2 (nitrogen dioxide):
Fair
27.5/100
O3 (ozone):
Fair
37.8/100
SO2 (sulfur dioxide):
Good
6.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.0/100
PM1 (ultrafine particles):
Good
14.4/100
Pollen forecast in Monmouth
View pollen forecastFrequently Asked Questions
Is air quality bad in Monmouth right now?
On 16 July 2026, overall air quality in Monmouth is fair. AQI is the main air quality indicator at 31.6/100. Pollution peaks around 4:00 PM (O3: 31.6/100).
Will air quality be worse tomorrow in Monmouth?
On 17 July 2026, air quality conditions in Monmouth will be similar to today, with AQI forecast at fair at 37.8/100. Pollution peaks around 3:00 PM (O3: 37.8/100).
When is air pollution at its worst in Monmouth?
Monmouth doesn't have one fixed air quality level — it swings between two extremes each year. Summer sunshine can drive up ozone locally, though overall air generally moves and clears more freely than in winter. Winter mornings can be the trickiest, with cold, still conditions trapping A483 traffic fumes and smoke from home fires close to the ground. Spring and autumn tend to be the calmer, more moderate stretches by comparison.
Are air quality levels in Monmouth 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.
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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