Cornwall Plume Plotter
Cornwall incinerator plume
at 20:50 on Mon, 03 Mar 2025
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The map shows the (predicted) current state of pollution from the incinerator at St Dennis.

The red line shows wind direction. Green rings show distance (km). Colours show concentration of oxides of nitrogen at ground level. Maximum: 10.7 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 PM10
Hydrogen chloride
Hydrogen flouride
Mercury
Cadmium and thallium
Other metals
Dioxins and furans

Oxides of nitrogen
Sulphur dioxide
Carbon monoxide
Particulates PM10
Hydrogen chloride
Hydrogen flouride
Mercury
Cadmium and thallium
Other metals
Dioxins and furans

Concentration
per m3
Background
(annual mean)
Plume
Oxides of nitrogen7.5 µg10.7 ng(0%)
Sulphur dioxide8.8 µg666 pg(0%)
Carbon monoxide96 µg645 pg(0%)
Particulates PM1023 µg48.2 pg(0%)
Hydrogen chloride1.7 µg468 pg(0%)
Hydrogen flouride1 µg22.8 pg(0%)
VOCsN/A12 pg
AmmoniaN/A3.21 pg
Mercury130 pg186 fg(0%)
Cadmium and thallium90 pg90.3 fg(0%)
Other metals49.7 ng6.94 pg(0%)
Dioxins and furans18.9 fg0(0%)
Display parameters
Zoom:
+
Area:
Centred
Downwind
Emissions:
Planned
Historical
Latest weather data
Wind 2.2 mph (1 m/s) from 80°. Cloud cover: 0/10. Temp: 5°C. Pressure: 1029 mb. Data from Newquay airport at 20:50.