Usk Plume Plotter
Usk incinerator plume
at 03:50 on Mon, 22 Dec 2025
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The map shows the predicted pollution caused by the emissions from the proposed incinerator at Trostrey Court Farm.

The red line shows wind direction. Green rings show distance (km). Colours show concentration of oxides of nitrogen at ground level. Maximum: 9.49 µg/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
Particulates PM10
Particulates PM2.5
Carbon monoxide
TOC
Cadmium and thallium
Mercury
Other metals
Dioxins and furans
PAHs
PCBs

Oxides of nitrogen
Particulates PM10
Particulates PM2.5
Carbon monoxide
TOC
Cadmium and thallium
Mercury
Other metals
Dioxins and furans
PAHs
PCBs

Concentration
per m3
Background
(annual mean)
Plume
Oxides of nitrogen6.3 µg9.49 µg(151%)
Particulates PM1012 µg69 ng(1%)
Particulates PM2.57.3 µg48.9 ng(1%)
Carbon monoxide91 µg690 ng(1%)
TOC160 ng138 ng(86%)
Cadmium and thallium100 pg414 pg(414%)
Mercury1.2 ng414 pg(34%)
Other metals12.6 ng4.14 ng(33%)
Dioxins and furans1.5 fg0.805 fg(54%)
PAHs190 pg1.26 pg(1%)
PCBs24 pg0.0506 fg(0%)
Display parameters
Zoom:
+
Area:
Centred
Downwind
Emissions:
Planned
Latest weather data
Wind 16.1 mph (7.2 m/s) from 80°. Cloud cover: 10/10. Temp: 10°C. Pressure: 1001 mb. Data from Cardiff airport at 03:50.