Worst air pollution Bristol, today and tomorrow
Today (30 August): Air quality in Bristol is moderate. AQI and O3 are moderate; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 AM (O3: 42.4/100).
Tomorrow (31 August 2026): Air quality in Bristol is fair. AQI improves to fair; O3 decreases to fair; all other pollutants stay as today. Pollution peaks around 12:00 PM (O3: 31.4/100). Airmine updates local air quality forecasts four times daily.
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Bristol's air quality in Pennsylvania reflects the Delaware River waterfront position in Bucks County, with vehicle emissions from US-13 and I-95 and the surrounding industrial and residential character contributing local sources. The Delaware River provides limited ventilation, while the broader Philadelphia mid-Atlantic regional airshed contributes elevated summer ozone and the flat Delaware valley coastal plain allows reasonable dispersal, though the riverside industrial corridor maintains moderate to above-average readings throughout the year.
Today - 30 August | Pollution peaks at 10:00
AQI:
Moderate
42.4/100
PM2.5 (fine particles):
Good
8.9/100
PM10 (coarse particles):
Good
6.3/100
NO2 (nitrogen dioxide):
Good
18.0/100
O3 (ozone):
Moderate
42.4/100
SO2 (sulfur dioxide):
Good
3.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.5/100
PM1 (ultrafine particles):
Good
5.7/100
Levels show the poorest local air quality during the day
Tomorrow - 31 August | Pollution peaks at 12:00
AQI:
Fair
31.4/100
PM2.5 (fine particles):
Good
10.1/100
PM10 (coarse particles):
Good
7.0/100
NO2 (nitrogen dioxide):
Good
13.1/100
O3 (ozone):
Fair
31.4/100
SO2 (sulfur dioxide):
Good
2.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.4/100
PM1 (ultrafine particles):
Good
5.8/100
Pollen forecast in Bristol
View pollen forecastFrequently Asked Questions
Is air quality bad in Bristol right now?
On 30 August 2026, overall air quality in Bristol is moderate. AQI is the main air quality indicator at 42.4/100. Pollution peaks around 10:00 AM (O3: 42.4/100).
Will air quality be worse tomorrow in Bristol?
On 31 August 2026, air quality conditions in Bristol will be better than today, with AQI forecast at fair at 31.4/100. Pollution peaks around 12:00 PM (O3: 31.4/100).
When is air pollution at its worst in Bristol?
Air quality across Bristol rises and falls with the seasons — the calmest air of the year usually arrives well after the summer ozone season fades, whereas extended summer heat waves, often worsened by regional haze, bring the toughest air quality stretch. Suburban and rural areas generally see less of the persistent traffic-driven pollution that affects the urban core.
Are air quality levels in Bristol 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: 30 August 2026 at 20:26 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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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