Worst air pollution Hornchurch, today and tomorrow
Today (16 July): Air quality in Hornchurch 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 Hornchurch is fair. All pollutants stay as today. Pollution peaks around 3:00 PM (O3: 39.6/100). 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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Hornchurch's air quality reflects its position within Havering, with local traffic and the town's built-up core as the main contributors. Thanks to the region's typical south-westerlies, pollution rarely lingers for long, which keeps average readings fairly unremarkable by UK standards. The A47 sees the heaviest traffic, and that shows up clearly in local roadside monitoring.
Today - 16 July | Pollution peaks at 15:00
AQI:
Fair
33.1/100
PM2.5 (fine particles):
Good
8.9/100
PM10 (coarse particles):
Good
2.9/100
NO2 (nitrogen dioxide):
Good
6.0/100
O3 (ozone):
Fair
33.1/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.9/100
PM1 (ultrafine particles):
Good
8.0/100
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
10.7/100
PM10 (coarse particles):
Good
3.7/100
NO2 (nitrogen dioxide):
Good
7.8/100
O3 (ozone):
Fair
39.6/100
SO2 (sulfur dioxide):
Good
1.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.1/100
PM1 (ultrafine particles):
Good
9.9/100
Pollen forecast in Hornchurch
View pollen forecastFrequently Asked Questions
Is air quality bad in Hornchurch right now?
On 16 July 2026, overall air quality in Hornchurch 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 Hornchurch?
On 17 July 2026, air quality conditions in Hornchurch 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 Hornchurch?
Hornchurch's air quality follows a familiar seasonal pattern most UK towns share. By summer, ozone tends to rise on bright days, while better ventilation generally keeps particulate and NO₂ levels lower than winter. In deep winter, a lack of wind lets A47 traffic fumes and woodsmoke settle instead of blowing through. The shoulder seasons generally bring the mildest readings of the year.
Are air quality levels in Hornchurch 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