Air Quality Monitoring Results

Air Quality Monitoring Results

Monitoring for nitrogen dioxide using diffusion tubes has been undertaken at various locations within West Wiltshire for a number of years. The Government and the Devolved Administrations have adopted an annual mean Air Quality Objective for nitrogen dioxide of 40µg/m3

Below are the nitrogen dioxide diffusion tube annual average results expressed in µg/m3 since 2000 and the results from the automatic analyser for nitrogen dioxide located in St Margarets Street, Bradford On Avon

Bradford On Avon site locations 2002 - 2007, corrected annual average data of nitrogen dioxide from diffuion tubes (µg/m3)

Note: Government target levels for Nitrogen Dioxide is an annual average of 40µg/m3

Location 2002 2003 2004 2005 2006 2007
Masons Lane 58 59 59 59 66 53
Silver Street - 36 34 35 36 31
New Road - 25 22 25 23 19
St Margaret's St 1 - 33 31 30 30 27
St Margaret's St 2 - 35 32 29 32 27
St Margaret's St 3 - 32 31 30 31 27

 

Bradford On Avon automatic site location 2004 - 2007, annual average data of nitrogen dioxide (µg/m3)

 2004 2005 2006 2007
St Margarets Street 27 28 29 26

  

Bradford On Avon site locations 2007, corrected monthly data of nitrogen dioxide from diffuion tubes (µg/m3). WWDC bias correction factor of 0.68 used

Note: Government target levels for Nitrogen Dioxide is an annual average of 40µg/m3

Site Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
BOA 9 Masons Lane 50 48 51 60 52 51 53 40 53 55 66 56
BOA St Margaret C/L 27 26 26 22 25 23 24 25 28 32 29
BOA St Margaret C/L 27 26 26 24 26 22 24 26 27 34 27
BOA St Margaret C/L 27 28 27 26 23 28 22 25 25 28 33 28
BOA Silver Street 33 31 34 27 26 26 31 30 31 36 0
BOA New Road 20 20 19 16 15 15 0 18 0 18 26 26
BOA Rear of 9 Masons Lane 16 20 16 13 10 11 8 11 14 16 22 20

 

Westbury site locations 2007, corrected monthly data of nitrogen dioxide from diffuion tubes (µg/m3). WWDC bias correction factor of 0.68 used

Note: Government target levels for Nitrogen Dioxide is an annual average of 40µg/m3

Location Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Warminster Road - post 76 28 35 31 39 29 35 29 36 33 40 43 37
Warminster Road - post 90 39 45 39 53 23 48 38 39 42 53 51 56
Haynes Road 28 35 40 56 31 38 26 41 44 16 24 19
Danvers Way 13 15 12 0 8 7 0 0 12 0 19 16
Oldfield Park 12 17 14 16 0 8 13 0 13 51 52 37
Oldfield Road 18 22 19 19 15 17 0 0 0 0 0 0

 

Trowbridge site locations 2007, corrected monthly data of nitrogen dioxide from diffuion tubes (µg/m3). WWDC bias correction factor of 0.68 used

Note: Government target levels for Nitrogen Dioxide is an annual average of 40µg/m3

Location Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
County Way, Trowbridge 27 29 28 29 20 29 25 27 27 34 37 36
Hill Street, Trowbridge 21 34 24 27 23 27 22 26 26 30 36 34