Worst air pollution Salisbury, today and tomorrow

Today (9 August): Air quality in Salisbury is fair. PM2.5 and PM1 are fair; AQI, NO2, and O3 are medium; PM10, SO2, CO, and HCHO are good. Pollution peaks around 6:00 AM (NO2: 59.1/100).
Tomorrow (10 August 2026): Air quality in Salisbury is fair. AQI worsens to fair; PM2.5 decreases to good; NO2 increases to fair; O3 increases to fair; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 5:00 PM (O3: 33.3/100). 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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Salisbury sits within Wiltshire, and its air quality profile is driven mainly by road traffic and the density of the centre. Thanks to the dominant maritime airflow, pollution rarely lingers for long, which keeps average readings fairly unremarkable by UK standards. Rush-hour queues near the M3 are usually when readings climb the most.

Today - 9 August | Pollution peaks at 06:00

AQI:

Medium

59.1/100

PM2.5 (fine particles):

Fair

25.4/100

PM10 (coarse particles):

Good

6.9/100

NO2 (nitrogen dioxide):

Medium

59.1/100

O3 (ozone):

Medium

56.2/100

SO2 (sulfur dioxide):

Good

18.7/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

7.8/100

PM1 (ultrafine particles):

Fair

31.8/100

Levels show the poorest local air quality during the day

Tomorrow - 10 August | Pollution peaks at 17:00

AQI:

Fair

33.3/100

PM2.5 (fine particles):

Good

8.6/100

PM10 (coarse particles):

Good

3.1/100

NO2 (nitrogen dioxide):

Fair

24.1/100

O3 (ozone):

Fair

33.3/100

SO2 (sulfur dioxide):

Good

5.6/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

4.6/100

PM1 (ultrafine particles):

Good

7.6/100

Pollen forecast in Salisbury

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Frequently Asked Questions

Is air quality bad in Salisbury right now?

On 9 August 2026, overall air quality in Salisbury is fair. PM1 is the main pollutant at 31.8/100. Pollution peaks around 6:00 AM (NO2: 59.1/100).

Will air quality be worse tomorrow in Salisbury?

On 10 August 2026, air quality conditions in Salisbury will be similar to today, with AQI forecast at fair at 33.3/100. Pollution peaks around 5:00 PM (O3: 33.3/100).

When is air pollution at its worst in Salisbury?

Salisbury'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. The coldest months usually bring the worst readings, as heating and temperature inversions keep M3 emissions from dispersing normally. For much of spring and autumn, things settle into a fairly unremarkable middle ground.

Are air quality levels in Salisbury 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.

Why doesn’t the forecast always reflect wildfire impacts?

Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.

During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.

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Data provided by Airmine — Last update: 10 August 2026 at 02:34 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.

Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.

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