Sheffield Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (16 October): Air quality in Sheffield is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 AM (NO2: 26.5/100).
Air Quality Tomorrow
Tomorrow (17 October 2026): Air quality in Sheffield is good. All pollutants stay as today. Pollution peaks around 6:00 PM (PM10: 24.7/100).
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Air Quality
Today - 16 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Good | 18.8/100 |
| PM2.5 (fine particles) | Good | 5.9/100 |
| PM10 (coarse particles) | Good | 4.8/100 |
| NO2 (nitrogen dioxide) | Good | 18.2/100 |
| O3 (ozone) | Good | 12.7/100 |
| SO2 (sulfur dioxide) | Good | 1.4/100 |
| CO (carbon monoxide) | Good | 0.5/100 |
| HCHO (formaldehyde) | Good | 2.5/100 |
| PM1 (ultrafine particles) | Good | 4.4/100 |
Tomorrow - 17 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Good | 18.0/100 |
| PM2.5 (fine particles) | Good | 13.7/100 |
| PM10 (coarse particles) | Good | 13.6/100 |
| NO2 (nitrogen dioxide) | Good | 9.2/100 |
| O3 (ozone) | Good | 14.6/100 |
| SO2 (sulfur dioxide) | Good | 1.0/100 |
| CO (carbon monoxide) | Good | 0.5/100 |
| HCHO (formaldehyde) | Good | 1.1/100 |
| PM1 (ultrafine particles) | Good | 3.4/100 |
Local Environmental Conditions
Traffic is the main source of air pollution in Sheffield, especially on the M1 to the east, the Parkway and the inner ring road around the city centre. To cut nitrogen dioxide, Sheffield introduced a Clean Air Zone in 2023 that charges the most polluting commercial vehicles, such as older lorries, buses and taxis. The city's hilly valleys can trap traffic fumes on calm days. Steelmaking and other industry in the Don Valley add some emissions, and wood burners add fine particles in winter.
Sheffield's steep valleys can hold traffic fumes over the city on calm days, especially in winter, when cold, still evenings, averaging around 4°C in January, also trap smoke from wood burners near the ground. In dry summers, moorland fires in the Peak District can leave a haze of smoke over the western suburbs. Spring can bring episodes of fine particles from farming and industry across England and Europe, while westerly winds and rain from the Pennines usually bring the cleanest air in Sheffield.
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Frequently Asked Questions About Air Quality in Sheffield
Is air quality bad in Sheffield right now?
On 16 October 2026, overall air quality in Sheffield is good. AQI is the main air quality indicator at 18.8/100. Pollution peaks around 10:00 AM (NO2: 26.5/100).
Will air quality be worse tomorrow in Sheffield?
On 17 October 2026, air quality conditions in Sheffield will be similar to today, with AQI forecast at good at 18.0/100. Pollution peaks around 6:00 PM (PM10: 24.7/100).
When is air pollution at its worst in Sheffield?
Sheffield's steep valleys can hold traffic fumes over the city on calm days, especially in winter, when cold, still evenings, averaging around 4°C in January, also trap smoke from wood burners near the ground. In dry summers, moorland fires in the Peak District can leave a haze of smoke over the western suburbs. Spring can bring episodes of fine particles from farming and industry across England and Europe, while westerly winds and rain from the Pennines usually bring the cleanest air in Sheffield.
Are air quality levels in Sheffield 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.
Understanding the Scale
The 0–100 air quality scores represent risk levels, not direct air pollutant concentrations. Higher scores indicate higher risk.
Air Quality
| Good | 0-20 | Low air quality risk. Air quality is expected to be good, with low levels of pollution. |
| Fair | 20-40 | Generally low air quality risk. Air quality is expected to be acceptable, with some pollution present. |
| Moderate | 40-60 | Moderate air quality risk. Air pollution is elevated and air quality may be less favorable. |
| Poor | 60-80 | High air quality risk. Air pollution is high and air quality is expected to be poor. |
| Very Poor | 80-100 | Very high air quality risk. Air pollution is very high and air quality is expected to be very poor. |