Hoddesdon incinerator plume at 21:20 on Tue, 18 Dec 2018
Estimated concentration of oxides of nitrogen (μg/m3):

Amwell View School6.3
St Margarets4.4
St John the Baptist Primary School2.6
The John Warner School2.4
Priors Wood Primary School1.8
Tower Primary School1.6
St Andrew's Primary School1.5
Christ Church Primary School and Nursery1.2
Kingshill Infant School1.1
St Mary's Junior School1.1
Thundridge Primary School1
Puller Memorial Primary School0.8
High Cross0.7
Sacombe Green0.7
Sacred Heart Primary School0.7
Great Amwell0.7
The Cranbourne Primary School0.7
Presdales School0.5
Green End0.5
Standon Green End0.5
Dane End0.5
St Catherine's Primary School0.4
Levens Green0.4
Rye Park Nursery School0.2
Forres Primary School0.2
Tonwell St Mary's Primary School0.2
Hebing End0.2
Colliers End0.2
The Chauncy School0.2
Pinewood School0.2
Middleton School0.2

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Weather data from
Stansted airport
The map shows the distribution of pollution. The key below shows the concentration of oxides of nitrogen at each location.
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Maximum pollution in the map area is shown on right, with amount of oxides of nitrogen.
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1g = 1000mg
1mg = 1000μg
1μg = 1000ng
1ng = 1000pg
1pg = 1000fg