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Historical data
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Outside air quality

> History of air quality on the M5 East project

> 2006 M5 East portal monitoring analysis

> Tunnel air quality explained

> Graphs

> Live data

> Historical data

> Exceedances

> Frequently asked questions

> Glossary of terms

> DECC Air quality data


Data availability

CO, NO2 and PM10 data for a given hour are available on this website 30 minutes after the following hour. For example, data for 09:00 to 10:00 is available at 10:30.

24-hour average PM10 data for a given day is available 30 minutes after midnight the next morning. For example, data for 05 July 2001 is available at 00:30 on 06 July 2001.

Unvalidated data is available in tabular form for the following time periods:

Past 24 hours

Past week

Past four weeks

M5 East Freeway monthly air quality monitoring summaries

This page is updated on or about the 15th of the month with non-validated data from the previous month and validated data from two months previous.

Disclaimer

Some of the tables and graphs on this page are derived from data that comes directly from the air monitoring stations. This data may be adjusted at a later time through a standardised procedure to account for instrument errors, power interruptions and the like. 

Files

Air Quality Monitoring - Past 4 Weeks

Disclaimer - The data used on this page comes directly from the air monitoring stations. This data may be adjusted at a later time through a standardised procedure to account for instrument errors, power interruptions and the like.

M5 East Ambient Air Data 2009

M5 East Ambient Air Data - January - September 2009

M5 East Ambient Air Data 2008

M5 East Ambient Air Data from January 2008 to December 2008

M5 East Ambient Air Data 2007

M5 East Ambient Air Data from January 2007 to December 2007.

M5 East Ambient Air Data 2006

M5 East Ambient Air Data from January 2006 to December 2006.

M5 East Ambient Air Data 2005

M5 East Ambient Air Data from 1 January 2005 to 31 December 2005

M5 East Ambient Air Data 2004

M5 East Ambient Air Data from 1 January 2004 to 31 December 2004

M5 East Ambient Air Data 2003

M5 East Ambient Air Data: January 2003 to 31 December 2003

M5 East Ambient Air Data 2002

M5 East Ambient Air Data: January 2002 to 31 December 2002

M5 East Ambient Air Data 2001

M5 East Ambient Air Data: January 2001 to December 2001

M5 East Ambient Air Data

M5 East Ambient Air Data: June 2000 to December 2000


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M5 East air quality management Historical data