Worst air pollution Downham Market, today and tomorrow
Today (16 July): Air quality in Downham Market is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (O3: 29.7/100).
Tomorrow (17 July 2026): Air quality in Downham Market is fair. All pollutants stay as today. Pollution peaks around 3:00 PM (O3: 33.0/100). 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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Like much of Norfolk, Downham Market's air quality is shaped less by industry these days and more by everyday road traffic. Thanks to light prevailing breezes, pollution rarely lingers for long, which keeps average readings fairly unremarkable by UK standards. Emissions along the M74 represent the town's main traffic-related pollution source.
Today - 16 July | Pollution peaks at 16:00
AQI:
Fair
29.7/100
PM2.5 (fine particles):
Good
10.1/100
PM10 (coarse particles):
Good
3.4/100
NO2 (nitrogen dioxide):
Good
8.3/100
O3 (ozone):
Fair
29.7/100
SO2 (sulfur dioxide):
Good
1.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.4/100
PM1 (ultrafine particles):
Good
8.3/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Fair
33.0/100
PM2.5 (fine particles):
Good
13.1/100
PM10 (coarse particles):
Good
4.5/100
NO2 (nitrogen dioxide):
Good
9.0/100
O3 (ozone):
Fair
33.0/100
SO2 (sulfur dioxide):
Good
2.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.0/100
PM1 (ultrafine particles):
Good
11.3/100
Pollen forecast in Downham Market
View pollen forecastFrequently Asked Questions
Is air quality bad in Downham Market right now?
On 16 July 2026, overall air quality in Downham Market is fair. AQI is the main air quality indicator at 29.7/100. Pollution peaks around 4:00 PM (O3: 29.7/100).
Will air quality be worse tomorrow in Downham Market?
On 17 July 2026, air quality conditions in Downham Market will be similar to today, with AQI forecast at fair at 33.0/100. Pollution peaks around 3:00 PM (O3: 33.0/100).
When is air pollution at its worst in Downham Market?
You can roughly predict Downham Market's air quality just by knowing the time of year. Come summer, it's ozone rather than particulates that's the bigger concern, especially on still, sunny days. The coldest months usually bring the worst readings, as heating and temperature inversions keep M74 emissions from dispersing normally. Spring and autumn tend to be the calmer, more moderate stretches by comparison.
Are air quality levels in Downham Market 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