Alton Plume Plotter
Alton incinerator plume
at 03:50 on Sat, 22 Feb 2025
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The map shows the (predicted) current state of pollution from the proposed incinerator at A31, near Froyle.

The red line shows wind direction. Green rings show distance (km). Colours show concentration of oxides of nitrogen at ground level. Maximum: 18.8 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
Sulphur dioxide
Carbon monoxide
Particulates
Hydrogen chloride
TOC
Hydrogen flouride
Ammonia
Cadmium and thallium
Mercury
Other metals
PAHs
Dioxins and furans
PCBs

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

Concentration
per m3
Background
(annual mean)
Plume
Oxides of nitrogen14.8 µg18.8 µg(127%)
Sulphur dioxide4.93 µg4.69 µg(95%)
Carbon monoxide255 µg7.82 µg(3%)
Particulates15.1 µg785 ng(5%)
Hydrogen chloride710 ng941 ng(133%)
TOC310 ng1.56 µg(505%)
Hydrogen flouride2.35 µg156 ng(7%)
Ammonia2.49 µg1.56 µg(63%)
Cadmium and thallium190 pg3.13 ng(1647%)
Mercury1.51 ng3.13 ng(207%)
Other metals24.9 ng47 ng(189%)
PAHs160 pg16.4 pg(10%)
Dioxins and furans33 fg9.39 fg(28%)
PCBs127 pg782 pg(616%)
Display parameters
Zoom:
+
Area:
Centred
Downwind
Emissions:
Planned
Latest weather data
Wind 6.9 mph (3.1 m/s) from 220°. Cloud cover: 10/10. Temp: 10°C. Pressure: 1007 mb. Data from Odiham airport at 03:50.