Hirwaun Plume Plotter
Hirwaun incinerator plume
at 19:50 on Wed, 19 Feb 2025
MAIN
PLACES
PLEASE WAIT...
map
Map
MAIN
PLACES

The map shows the (predicted) current state of pollution from the proposed incinerator at Fifth Avenue, Hirwaun Industrial Estate.

The red line shows wind direction. Green rings show distance (km). Colours show concentration of oxides of nitrogen at ground level. Maximum: 579 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
TOC
Hydrogen chloride
Cadmium and Thallium
Mercury
Other metals
Ammonia
Dioxins and furans
PCBs
PAHs

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

Concentration
per m3
Background
(annual mean)
Plume
Oxides of nitrogen6.16 µg579 ng(9%)
Sulphur dioxide2.79 µg145 ng(5%)
Carbon monoxide97.9 ng724 ng(740%)
Particulates10.3 µg72.4 ng(1%)
TOC162 ng145 ng(90%)
Hydrogen chloride185 ng72.4 ng(39%)
Hydrogen flourideN/A14.5 ng
Cadmium and Thallium285 pg290 pg(102%)
Mercury21.7 pg290 pg(1336%)
Other metals25 ng4.34 ng(17%)
Ammonia1.24 µg7.24 ng(1%)
Dioxins and furans4.58 fg0.579 fg(13%)
PCBs22.2 pg0.867 fg(0%)
PAHs252 pg14.5 pg(6%)
Display parameters
Zoom:
+
Area:
Centred
Downwind
Emissions:
Planned
Latest weather data
Wind 11.4 mph (5.1 m/s) from 120°. Cloud cover: 10/10. Temp: 8°C. Pressure: 1012 mb. Data from Cardiff airport at 19:50.