Westbury Plume Plotter
Westbury incinerator plume
at 10:50 on Wed, 14 Jan 2026
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The map shows the predicted pollution caused by the emissions from the proposed incinerator at Stephenson Road.

The red line shows wind direction. Green rings show distance (km). Colours show concentration of oxides of nitrogen at ground level. Maximum: 863 ng/m3. This is the concentration at the location that is most polluted by the plume.

Breakdown of pollutants at most polluted location (green = background, red = added by plume):

Oxides of nitrogen
Sulphur dioxide
Carbon monoxide
Particulates
Hydrogen chloride
TOC
Hydrogen flouride
Ammonia
Cadmium and Thallium
Mercury
Other metals
Dioxins and furans
PAHs
PCBs

Oxides of nitrogen
Sulphur dioxide
Carbon monoxide
Particulates
Hydrogen chloride
TOC
Hydrogen flouride
Ammonia
Cadmium and Thallium
Mercury
Other metals
Dioxins and furans
PAHs
PCBs

Concentration
per m3
Background
(annual mean)
Plume
Oxides of nitrogen13.2 µg863 ng(7%)
Sulphur dioxide2.21 µg216 ng(10%)
Carbon monoxide266 µg360 ng(0%)
Particulates14.9 µg36 ng(0%)
Hydrogen chloride710 ng43.1 ng(6%)
TOC390 ng71.8 ng(18%)
Hydrogen flouride2.35 µg7.14 ng(0%)
Ammonia2.93 µg71.8 ng(2%)
Cadmium and Thallium570 pg144 pg(25%)
Mercury2.8 ng144 pg(5%)
Other metals142 ng2.16 ng(2%)
Dioxins and furans33 fg0.431 fg(1%)
PAHs980 pg755 fg(0%)
PCBs129 pg36 pg(28%)
Display parameters
Zoom:
+
Area:
Centred
Downwind
Emissions:
Planned
Latest weather data
Wind 5.8 mph (2.6 m/s) from 160°. Cloud cover: 0/10. Temp: 5°C. Pressure: 1013 mb. Data from Bristol airport at 10:50.