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Little Belhus (M25)

As part of the H2020 ReSET project led by King's College London air, noise and light pollution monitors are being installed in transects from different types of transport route to better understand the environmental footprint of these routes.  We are monitoring vehicle exhaust particulates (PM1, PM2.5,PM4,PM10), noise and nighttime light. Preliminary results (updated fortnightly) are shown below.  Where values are in excess of UK and EU air quality limits, this is indicated, but note that these are preliminary live research data that have not been quality controlled, so they should not be used for non-academic uses.

Map of station locations

Automatic weather station shows live meteorological data


Mean sound level Noise pollution is  any unwanted sound that affects the health and well-being of humans or other organisms. Most commonly it can cause Noise Induced Hearing Loss (NIHL) but chronic exposure to loud noise can also cause high blood pressure, heart disease, sleep disturbance, and stress. Sound is measured in decibels (dB).  Normal conversation is about 60dB.  Noise above 70 dB over a prolonged period of time may start to damage your hearing whilst loud noise above 120 dB can cause immediate harm to your ears.

Light pollution
Data overlap