Worst air pollution Henley-on-Thames, today and tomorrow
Today (16 July): Air quality in Henley-on-Thames 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: 34.0/100).
Tomorrow (17 July 2026): Air quality in Henley-on-Thames is medium. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 4:00 PM (O3: 43.6/100). 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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Traffic on the M1 is the most significant local emissions source, especially at peak times. Henley-on-Thames's position in Oxfordshire means air quality is mostly determined by local road traffic and the compact scale of the centre. Thanks to inland breezes from the surrounding countryside, pollution rarely lingers for long, which keeps average readings fairly unremarkable by UK standards.
Today - 16 July | Pollution peaks at 15:00
AQI:
Fair
34.0/100
PM2.5 (fine particles):
Good
9.0/100
PM10 (coarse particles):
Good
3.1/100
NO2 (nitrogen dioxide):
Good
11.5/100
O3 (ozone):
Fair
34.0/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.8/100
PM1 (ultrafine particles):
Good
8.6/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 16:00
AQI:
Medium
43.6/100
PM2.5 (fine particles):
Good
12.3/100
PM10 (coarse particles):
Good
4.1/100
NO2 (nitrogen dioxide):
Good
16.3/100
O3 (ozone):
Medium
43.6/100
SO2 (sulfur dioxide):
Good
2.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.2/100
PM1 (ultrafine particles):
Good
11.5/100
Pollen forecast in Henley-on-Thames
View pollen forecastFrequently Asked Questions
Is air quality bad in Henley-on-Thames right now?
On 16 July 2026, overall air quality in Henley-on-Thames is fair. AQI is the main air quality indicator at 34.0/100. Pollution peaks around 3:00 PM (O3: 34.0/100).
Will air quality be worse tomorrow in Henley-on-Thames?
On 17 July 2026, air quality conditions in Henley-on-Thames will be better than today, with AQI forecast at medium at 43.6/100. Pollution peaks around 4:00 PM (O3: 43.6/100).
When is air pollution at its worst in Henley-on-Thames?
Henley-on-Thames's air quality follows a familiar seasonal pattern most UK towns share. Summer's more of a mixed bag: ozone can spike in strong sun, but overall dispersion tends to be better than the depths of winter. Come winter, NO₂ and PM2.5 usually creep up, as heating and calmer air let M1 traffic emissions linger rather than disperse. The shoulder seasons generally bring the mildest readings of the year.
Are air quality levels in Henley-on-Thames 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