Question · Action Scorecards 2025
Negatively Scored Question - Two-tier
A council will be negatively scored if they have 25% or more LSOAs (Lower-layer Super Output Areas) above the World Health Organisations (WHO) PM 2.5 guidelines.
Negative marks applied for the first tier: -2% of the maximum possible section score.
A council will be further negatively scored if they have 75% or more LSOAs (Lower-layer Super Output Areas) above the World Health Organisations (WHO) PM 2.5 guidelines.
Negative marks applied for the second tier: -4% of the maximum possible section score.
PM 2.5 (Particulate Matter 2.5) is the tiny particles or droplets in the air that are two and one half microns or less in width. PM 2.5 can be caused by burning fossil fuels, tyre wear and brake dust from cars and even weather variations. Data for PM 2.5 is less accurate at the local level and relies upon modelling due to a lack of national sensors.
LSOAs (Lower-layer Super Output Areas) are small areas designed to be of a similar population size, with an average of approximately 1,500 residents or 650 households. They are used to form the basis of the census.
WHO PM2.5 guidelines: PM 2.5 concentrations of 5 μg/m3 annual average.
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