Worst air pollution Brentwood, today and tomorrow
Today (16 July): Air quality in Brentwood 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: 33.1/100).
Tomorrow (17 July 2026): Air quality in Brentwood is fair. NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 39.6/100). 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
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Emissions along the M20 represent the town's main traffic-related pollution source. Air quality in Brentwood is shaped by its location in Essex, where vehicle traffic and everyday urban activity dominate local sources. Inland breezes from the surrounding countryside generally provide reasonable ventilation, keeping levels close to typical UK urban averages for a town this size.
Today - 16 July | Pollution peaks at 15:00
AQI:
Fair
33.1/100
PM2.5 (fine particles):
Good
10.9/100
PM10 (coarse particles):
Good
3.6/100
NO2 (nitrogen dioxide):
Good
17.0/100
O3 (ozone):
Fair
33.1/100
SO2 (sulfur dioxide):
Good
2.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.9/100
PM1 (ultrafine particles):
Good
9.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Fair
39.6/100
PM2.5 (fine particles):
Good
13.2/100
PM10 (coarse particles):
Good
4.5/100
NO2 (nitrogen dioxide):
Fair
21.5/100
O3 (ozone):
Fair
39.6/100
SO2 (sulfur dioxide):
Good
2.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.1/100
PM1 (ultrafine particles):
Good
12.1/100
Pollen forecast in Brentwood
View pollen forecastFrequently Asked Questions
Is air quality bad in Brentwood right now?
On 16 July 2026, overall air quality in Brentwood is fair. AQI is the main air quality indicator at 33.1/100. Pollution peaks around 3:00 PM (O3: 33.1/100).
Will air quality be worse tomorrow in Brentwood?
On 17 July 2026, air quality conditions in Brentwood will be similar to today, with AQI forecast at fair at 39.6/100. Pollution peaks around 3:00 PM (O3: 39.6/100).
When is air pollution at its worst in Brentwood?
Most of spring and autumn stays fairly steady, right in the middle of those two extremes. In Brentwood, pollution levels don't stay flat — winter and summer look pretty different. The coldest months usually bring the worst readings, as heating and temperature inversions keep M20 emissions from dispersing normally. Come summer, it's ozone rather than particulates that's the bigger concern, especially on still, sunny days.
Are air quality levels in Brentwood 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?
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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