Worst air pollution North Walsham, today and tomorrow
Today (16 July): Air quality in North Walsham 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: 29.0/100).
Tomorrow (17 July 2026): Air quality in North Walsham is fair. All pollutants stay as today. Pollution peaks around 1:00 PM (O3: 27.8/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
The nearby A38 corridor contributes steady vehicle emissions that affect roadside readings. North Walsham's position in Norfolk means air quality is mostly determined by local road traffic and the compact scale of the centre. Thanks to prevailing westerlies, pollution rarely lingers for long, which keeps average readings fairly unremarkable by UK standards.
Today - 16 July | Pollution peaks at 15:00
AQI:
Fair
29.0/100
PM2.5 (fine particles):
Good
17.8/100
PM10 (coarse particles):
Good
6.2/100
NO2 (nitrogen dioxide):
Good
12.4/100
O3 (ozone):
Fair
29.0/100
SO2 (sulfur dioxide):
Good
3.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.8/100
PM1 (ultrafine particles):
Good
13.7/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Fair
27.8/100
PM2.5 (fine particles):
Good
17.8/100
PM10 (coarse particles):
Good
6.7/100
NO2 (nitrogen dioxide):
Good
11.4/100
O3 (ozone):
Fair
27.8/100
SO2 (sulfur dioxide):
Good
2.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.4/100
PM1 (ultrafine particles):
Good
12.7/100
Pollen forecast in North Walsham
View pollen forecastFrequently Asked Questions
Is air quality bad in North Walsham right now?
On 16 July 2026, overall air quality in North Walsham is fair. AQI is the main air quality indicator at 29.0/100. Pollution peaks around 3:00 PM (O3: 29.0/100).
Will air quality be worse tomorrow in North Walsham?
On 17 July 2026, air quality conditions in North Walsham will be similar to today, with AQI forecast at fair at 27.8/100. Pollution peaks around 1:00 PM (O3: 27.8/100).
When is air pollution at its worst in North Walsham?
Air quality in North Walsham isn't the same all year round — it really shifts with the seasons. Once the heating goes on and the air turns still, pollution from the A38 and nearby chimneys tends to build up rather than clear. In summer, ozone can build up on sunny afternoons, though windier, warmer weather usually helps clear traffic-related pollution faster than in winter. The shoulder seasons generally bring the mildest readings of the year.
Are air quality levels in North Walsham 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?
Check air quality in other popular cities:
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