(Minor update on 07/11/2019, following feedback from Hillingdon. Hillingdon Pump Lane Focus Area has been included in the Hayes Focus Areas)

According to the LAEI 2016, there are 183 Air Quality Focus Areas in London.

The Focus Areas are locations that not only exceed the EU annual mean limit value for NO2 but are also locations with high human exposure. They were defined to address concerns raised by boroughs within the LAQM review process and forecasted air pollution trends.

This is not an exhaustive list of London’s hotspot locations, but where the GLA believe the problem to be most acute.

1. Supporting Information (.ZIP - 91KB) - Definition, methodology and list of focus areas LAEI 2016

2. GIS files (.ZIP - 49KB) - GIS geographies in ArcGIS and MapInfo formats.

3. Images (.ZIP - 507MB) - Maps with focus areas at both London and borough level.

The LAEI 2013 is the latest version of the London Atmospheric Emissions Inventory and replaces the previous versions. The LAEI 2013 was published in 2016. However, due to revised road transport emission factors (COPERT 5) the data has been further updated in April 2017 (see 4.1 and 6.1) Estimates of key pollutants (NOx, PM10, PM2.5 and CO2) are included for the base year 2013 and projected forward to 2020, 2025, and 2030. Emissions for previous years 2008 and 2010 are also provided, to allow comparison with previous versions of the LAEI. The LAEI area covers the 32 London Boroughs and the City of London and up to the M25 motorway Due to the size of the LAEI database this dataset has been zipped and needs to be downloaded in several parts. 0 - Documentation (.ZIP - 17.8 MB) - NEW LAEI 2013 Methodology 1 - Supporting Information (.ZIP - 678.1 MB) Key GIS geographies and road traffic flows and vehicle-kilometres. 2 - Grid Emissions Summary Emissions by 1km grid square and source, for each inventory year as well as pivot tables to calculate borough and zone level statistics. Data is in Excel, Mapinfo and ArcGIS format. Excel Files (.ZIP - 131.8MB) - 14/04/16 Update - Please note that the Excel files have been updated, and now include an additional Pivot Table providing a summary of Road Transport emissions by Borough. 26/01/2017 Update - Please note that Emissions Summary for other pollutants has now been added to this section. GIS (Mapinfo) Files - (.ZIP - 212.5 MB) - 21/11/2016 Update - Please note that the Road Transport files for PM10 Major Roads have been updated. GIS (ArcGIS) Files - (.ZIP - 269.6 MB) - 21/11/2016 Update - Please note that the Road Transport files for PM10 Major Roads have been updated. 3 - Detailed Road Transport Road transport emissions by vehicle type at link level for major roads and grid level for minor roads and cold start emissions. Major Roads - 2008 - Link Level (.XLSX - 352.8 MB) Major Roads - 2010 - Link Level (.XLSX - 364.8 MB) Major Roads - 2013 - Link Level (.XLSX - 332.2 MB) Major Roads - 2020 - Link Level (.XLSX - 363.4 MB) Major Roads - 2025 - Link Level (.XLSX - 361.2 MB) Major Roads - 2030 - Link Level (.XLSX - 373.2 MB) Minor Roads and Cold Start Emissions - All Years - Grid Level (.ZIP - 51.2 MB) Emissions for LAEI 2013 Updated to follow soon. 4 - Concentrations (.ZIP - 1.6 GB) Modelled 2013, 2020, 2025 and 2030 concentrations of NO2, NOx, PM10, PM10d and PM2.5 at 20m grid level. 04/04/17 - Please note that new LAEI 2013 Updated concentration files have now been included (see 4.1) Due to the size of this database we recommend working on a local drive rather than over a network. 4.1. Concentrations LAEI 2013 Update (.ZIP - 767.837 KB) - NEW Modelled 2013 and 2020 concentrations of NO2, NOx, PM10, PM10d and PM2.5 at 20m grid level. 04/04/2017 - Please note this file contains updated revised LAEI 2013 concentration data which should now replace files previously provided for 2013 and 2020. 5 - Slides Presentations (.ZIP - 8.182 KB) 21/04/2016 - Please note that these slides have been added as a result of the LAEI 2013 Workshop on 14/04/2016 LAEI2013Workshop_DataStructure - Description of the data structure in the LAEI2013 LAEI2013Workshop_Trends - LAEI2013. Trends and comparisons LAEI2013Workshop_Focus Areas - Focus Areas Indentification Update LAEI2013Workshop_EmissionsFunctions - Emissions functions problems. Developing new ones 6 - Greater London Concentration Maps - Images of NO2, PM10, PM10d and PM2.5 for all LAEI years at Greater London level. 04/04/17 - Please note that new LAEI 2013 Updated concentration maps have now been included (see 6.1) Maps at borough level can be found in the LLAQM bespoke borough by borough 2013 air quality modelling and data, here 6.1 - Greater London concentration Maps LAEI 2013 Update (.ZIP - 424.442 KB) - NEW Images of NO2, PM10, PM10d and PM2.5 for 2013 and 2020 Updated LAEI at Greater London level. 04/04/2017 - Please note this file contains updated revised LAEI 2013 concentration maps/images which should now replace images previously provided for 2013 and 2020.

The LAEI 2013 has been superseded. Click here for the full list of releases. The LAEI 2013 was published in 2016. However, due to revised road transport emission factors (COPERT 5) the data has been further updated in April 2017 (see 4.1 and 6.1) Estimates of key pollutants (NOx, PM10, PM2.5 and CO2) are included for the base year 2013 and projected forward to 2020, 2025, and 2030. Emissions for previous years 2008 and 2010 are also provided, to allow comparison with previous versions of the LAEI. The LAEI area covers the 32 London Boroughs and the City of London and up to the M25 motorway Due to the size of the LAEI database this dataset has been zipped and needs to be downloaded in several parts.

The LAEI 2006 has since been superseded. Click here for the full list of releases.

Modelled NO2 annual mean concentrations in London for the year 2010. Calculations are based on the 2006 London Atmospheric Emissions Inventory (LAEI) and use three different meteorological scenarios (2003, 2004 and 2006).

This dataset can be mapped in a Geographic Information System (GIS) using the corresponding 20m grid or point datasets also available on the Datastore.

Due to the detailed nature of this dataset and the resulting large file size, the download file has been compressed.

The LAEI 2010 has since been superseded. Click here for the full list of releases.

There are 187 Air Quality Focus Areas in the Capital. These are locations that not only exceed the EU annual mean limit value for NO2 but are also locations with high human exposure. The Focus Areas were defined to address concerns raised by boroughs within the LAQM review process and forecasted air pollution trends. This is not an exhaustive list of London’s hotspot locations, but where the GLA believe the problem to be most acute.

GIS Files (Zip) 117 KB

Supporting Information (Zip) 241 KB

https://s3-eu-west-1.amazonaws.com/londondatastore-upload/London-focus-areas.gif" alt="" />

The LAEI 2010 is the latest version of the LAEI released by the GLA and replaces the previous versions. Estimates of eight key and six subisdary pollutants are included for the base year 2010 and projected forward to 2012, 2015, and 2020. The LAEI area covers the 32 London Boroughs and the City of London and up to the M25 motorway.

Due to the size of the LAEI database this dataset has been zipped and needs to be downloaded in five parts.

0 - Documentation (3MB)

0 - Supporting data (118MB)

1 - Summary Emissions (95 MB)

2 - Emissions (1,685 MB)

3 - Concentrations (554MB)

Due to the size of this database we recommend working on a local drive rather than over a network.

Read about the Mayors' Air Quality Strategy 'Clearing the air'.

The LAEI 2006 has since been superseded. Click here for the full list of releases.

Modelled NO2 annual mean concentrations in London for the year 2006. Calculations are based on the 2006 London Atmospheric Emissions Inventory (LAEI) and use three different meteorological scenarios (2003, 2004 and 2006).

This dataset can be mapped in a Geographic Information System (GIS) using the corresponding 20m grid or point datasets also available on the Datastore.

Due to the detailed nature of this dataset and the resulting large file size, the download file has been compressed.

blockquote { margin: 1em 3em; color: #9e0059; border-left: 2px solid #9e0059; padding-left: 1em; } The LAEI 2006 has since been superseded. Click here for the full list of releases. Modelled PM10 annual mean concentrations in London for the year 2006. Calculations are based on the 2006 London Atmospheric Emissions Inventory (LAEI) and use three different meteorological scenarios (2003, 2004 and 2006). This dataset can be mapped in a Geographic Information System (GIS) using the corresponding 20m grid or point datasets also available on the Datastore. Due to the detailed nature of this dataset and the resulting large file size, the download file has been compressed.

According to the LAEI 2019, there are 160 Air Quality Focus Areas in London. The Focus Areas are locations that not only exceed the EU annual mean limit value for NO2 but are also locations with high human exposure. They were defined to address concerns raised by boroughs within their Local Air Quality Management (LAQM) review process and forecasted air pollution trends. This is not an exhaustive list of London’s hotspot locations, but where the GLA believe the problem to be most acute. 1. Supporting Information (.ZIP - 86KB) - Definition, methodology and list of focus areas LAEI 2016 2. GIS files (.ZIP - 44KB) - GIS geographies in ArcGIS and MapInfo formats. 3. Images (.ZIP - 78KB) - Maps with focus areas at both London and borough level. Update 26 04 2023: Maps have been updated to show the latest symbology used in LAEI 2019

The LAEI 2006 has since been superseded. Click here for the full list of releases.

Point locations at 20 metre grid spacing, used for mapping modelled concentration values for LAEI-2006 datasets.

Points represent the centre of a 20m by 20m square and can be linked to modelled vales datasets using GRID-ID field.

Due to the detailed nature of this dataset and the resulting large file size, the download file has been compressed (approx 20mb).

http://www.cleanerairforlondon.org.uk/">Click here for more information about clearing London's air.

The LAEI 2008 has since been superseded. Click here for the full list of releases.

Concentration Modelling has been produced by the Environmental Research Group, Kings College London, using the LAEI 2008. Pollutant maps for the Greater London area have been produced for the years 2008, 2011 and 2015.

Emissions data contained within the LAEI 2008 can also be downloaded from the Datastore

Technical Information

This dataset consists of a series of very detailed GIS layers showing modelled concentration values for five different pollutants. Each zip file contains a 20 metre grid shapefile, mxd and layer files for use in ESRI ArcGIS software.

Data will be made available in other formats and structures (such as generalised contours which are faster to draw) in due course.

Pollutant Illustrative Map (jpg) 20m grid (shapefile) 20m grid (tab file)

NO2 Annual Mean

2008, 2011, 2015 and Download file (147mb zipped)

NOx Annual Mean

2008, 2011, 2015, and Download file (150mb zipped)

PM10 Annual Mean

2008, 2011, 2015, and Download file (142mb zipped)

PM10 Exceedence

2008, 2011, 2015, and Download file (148mb zipped)

PM25 Exceedence

2008, 2011, 2015, and Download file (140mb zipped)

The LAEI 2010 has since been superseded. Click here for the full list of releases. Estimates of eight key and six subisdary pollutants are included for the base year 2010 and projected forward to 2012, 2015, and 2020. The LAEI area covers the 32 London Boroughs and the City of London and up to the M25 motorway. Due to the size of the LAEI database this dataset has been zipped and needs to be downloaded in five parts. 0 - Documentation (3MB) 0 - Supporting data (118MB) 1 - Summary Emissions (95 MB) 2 - Emissions (1,685 MB) 3 - Concentrations (554MB) Due to the size of this database we recommend working on a local drive rather than over a network. Read about the Mayors' Air Quality Strategy 'Clearing the air'.

blockquote { margin: 1em 3em; color: #9e0059; border-left: 2px solid #9e0059; padding-left: 1em; } The LAEI 2006 has since been superseded. Click here for the full list of releases. Modelled NO2 annual mean concentrations in London for the year 2006. Calculations are based on the 2006 London Atmospheric Emissions Inventory (LAEI) and use three different meteorological scenarios (2003, 2004 and 2006). This dataset can be mapped in a Geographic Information System (GIS) using the corresponding 20m grid or point datasets also available on the Datastore. Due to the detailed nature of this dataset and the resulting large file size, the download file has been compressed.

The LAEI 2010 has since been superseded. Click here for the full list of releases. Estimates of eight key and six subisdary pollutants are included for the base year 2010 and projected forward to 2012, 2015, and 2020. The LAEI area covers the 32 London Boroughs and the City of London and up to the M25 motorway. Due to the size of the LAEI database this dataset has been zipped and needs to be downloaded in five parts. 0 - Documentation (3MB) 0 - Supporting data (118MB) 1 - Summary Emissions (95 MB) 2 - Emissions (1,685 MB) 3 - Concentrations (554MB) Due to the size of this database we recommend working on a local drive rather than over a network. Read about the Mayors' Air Quality Strategy 'Clearing the air'.

blockquote { margin: 1em 3em; color: #9e0059; border-left: 2px solid #9e0059; padding-left: 1em; } The LAEI 2008 has since been superseded. Click here for the full list of releases. Concentration Modelling has been produced by the Environmental Research Group, Kings College London, using the LAEI 2008. Pollutant maps for the Greater London area have been produced for the years 2008, 2011 and 2015. Emissions data contained within the LAEI 2008 can also be downloaded from the Datastore Technical Information This dataset consists of a series of very detailed GIS layers showing modelled concentration values for five different pollutants. Each zip file contains a 20 metre grid shapefile, mxd and layer files for use in ESRI ArcGIS software. Data will be made available in other formats and structures (such as generalised contours which are faster to draw) in due course. Pollutant Illustrative Map (jpg) 20m grid (shapefile) 20m grid (tab file) NO2 Annual Mean 2008, 2011, 2015 and Download file (147mb zipped) NOx Annual Mean 2008, 2011, 2015, and Download file (150mb zipped) PM10 Annual Mean 2008, 2011, 2015, and Download file (142mb zipped) PM10 Exceedence 2008, 2011, 2015, and Download file (148mb zipped) PM25 Exceedence 2008, 2011, 2015, and Download file (140mb zipped)

Updated in Februrary 2017. Air quality in London has improved in recent years as a result of policies to reduce emissions, primarily from road transport. However, recently updated maps of pollution concentrations for 2013 (LAEI 2013) still show significant areas of exceedances of the annual mean NO2 EU Limit Values. Improvements are planned to address these, as recently announced in the Mayor’s package of air quality measures. The Updated Analysis of Air Pollution Exposure in London research provides an update to similar analysis undertaken in 2013 (which looked at pollution exposure in 2010), published recently by City Hall. It examines pollution exposure in London in 2013 and considers how exposure varies by indicators of age, relative deprivation and ethnic groups in London. It also looks at total exposure (broken down by borough) and exposure at schools. Through the research described in this report, City Hall is seeking to understand the inequalities in accessing clean air in London and considering how this will be improved by planned air pollution policies. The spreadsheet lists the schools located in areas where average concentrations of Nitrogen Dioxide (NO2) are over the legal and safe limit as defined by the EU Limit Values; the Limit Value is 40 μg/m3. The modelled NO2 data used in this report is from the 2013 London Atmospheric Emissions Inventory (LAEI), and the list of schools used is from Edubase public portal from the Department of Education. The list is shown by borough and in descending order with the most polluted first. Further analysis of this data and other indications of the links between air pollution and social gradient in London can be found in the Updated Analysis of Air Pollution Exposure in London.

blockquote { margin: 1em 3em; color: #9e0059; border-left: 2px solid #9e0059; padding-left: 1em; } The LAEI 2006 has since been superseded. Click here for the full list of releases. Modelled PM10 exceedance days in London for the year 2010. Calculations are based on the 2006 London Atmospheric Emissions Inventory (LAEI) and use three different meteorological scenarios (2003, 2004 and 2006). This dataset can be mapped in a Geographic Information System (GIS) using the corresponding 20m grid or point datasets also available on the Datastore. Due to the detailed nature of this dataset and the resulting large file size, the download file has been compressed.

London Energy and Greenhouse Gas Inventory (LEGGI) 2010 showing greenhouse gas emissions and energy consumption for London. The is the final confirmed version of the LEGGI 2010. LEGGI shows estimates of energy consumption and carbon dioxide (CO2) emissions from Homes, Workplaces and Transport within the Greater London area. It is produced by the Greater London Authority on an annual basis to measure progress against the Mayor's Climate Change Mitigation and Energy Strategy. LEGGI uses sub-regional energy (electricity, gas and other fuels) and CO2 data published by DECC for Homes and Workplaces, and data from the London Atmospheric Emissions Inventory (LAEI) for energy and CO2 data for Transport.

London Energy and Greenhouse Gas Inventory (LEGGI) 2012 showing greenhouse gas emissions and energy consumption for London. The is the interim version of the LEGGI 2012, which will be confirmed when final confirmed data on energy use is published by the Department of Energy and Climate Change (DECC), expected in 2015. LEGGI shows estimates of energy consumption and carbon dioxide (CO2) emissions from Homes, Workplaces and Transport within the Greater London area. It is produced by the Greater London Authority on an annual basis to measure progress against the Mayor's Climate Change Mitigation and Energy Strategy. LEGGI uses sub-regional energy (electricity, gas and other fuels) and CO2 data published by DECC for Homes and Workplaces, and data from the London Atmospheric Emissions Inventory (LAEI) for energy and CO2 data for Transport. Interim results show that in 2012, emissions in London were 40.75 MtCO2e. This is a 10% reduction from 1990 figures and a 19% reduction since their peak in 2000. CO2e levels have increased by 4.5% (1.76 MtCO2e) from 2011 to 2012 (38.99 to 40.75 MtCO2e respectively). It is estimated this is due to an increase in the CO2e intensity of the electricity grid, increased gas use due to a cold winter in 2012 and an increased population in London.

London Energy and Greenhouse Gas Inventory (LEGGI) 2011 showing greenhouse gas emissions and energy consumption for London. The is the final confirmed version of the LEGGI 2011. LEGGI shows estimates of energy consumption and carbon dioxide (CO2) emissions from Homes, Workplaces and Transport within the Greater London area. It is produced by the Greater London Authority on an annual basis to measure progress against the Mayor's Climate Change Mitigation and Energy Strategy. LEGGI uses sub-regional energy (electricity, gas and other fuels) and CO2 data published by DECC for Homes and Workplaces, and data from the London Atmospheric Emissions Inventory (LAEI) for energy and CO2 data for Transport.