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Strand Aldwych

As part of the H2020 ReSET project led by King's College London and in partnership with King's College London Estates and Sustainability Teams as well as Westminster City Council, air and noise pollution monitors are being installed on roofs and at street level throughout the Strand-Aldwych project area.  We are monitoring vehicle exhaust particulates (PM1, PM2.5,PM4,PM10) and gaseous pollutants to better understand the impact of the pedestrianisation project on noise and air pollution on this section of the Strand and Aldwych. 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

Strand roof level automatic weather station shows live meteorological data from the roof of KCL Strand Building

Strand roof level pollution monitor shows live noise, air, light pollution from the roof of KCL Strand Building

Wind speeds

Particulates (PM10) have a diameter of 10 micrometers or less and includes:  smoke, dust, soot, salts, acids, and metals. It can also be formed indirectly when gases emitted from vehicles and industrial sources undergo chemical reactions in the atmosphere. The EU air quality standard limit for 24 hr average PM10 is 50 ug/m^3. The values below are also in ug/m^3.
Particulates (PM2.5) are particles that have diameter less than 2.5 micrometres (more than 100 times thinner than a human hair) and thus remain suspended for longer. These particles are formed as a result of burning fuel and chemical reactions that take place in the atmosphere. The EU Directive 2008/50/EC sets an objective to limit PM2.5 to less than ug/m^3 measured over a 3 year annual running mean. The values below are also in ug/m^3.

Particulates (PM1) are ultra-fine particles with an aerodynamic diameter less than 1 micrometers. Ultra-fine particles are potentially the most damaging because they can penetrate directly through the lungs into the bloodstream and are thus spread to the organs of the body. There is no accepted air quality standard for PM1 and it is rarely measured.

Volatile organic compounds (VoCs)  such as benzene, n-pentane and n-hexane can be emitted by incomplete fuel combustion and vapourisation, especially by motor vehicles.  High exposure can lead to chronic effects such as damage to the human immune and nervous systems including damage to the liver, kidneys and nervous system and cancer. Short term exposure can produce irritation of the eyes, nose and throat, nausea, fatigue and loss of coordination.

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.

90th percentile sound level


Data overlap