Latest measured levels based on data provided by the Environment Agency

Here you can view the detailed data behind the latest measurement summary displayed on UK-AIR, and also a summary of information that has been displayed over the previous 24 hours. The detailed data tabulated below are from monitoring sites within the AURN. Graphs of hourly monitoring data are also available to view as weekly time series. You can also subscribe to this information as an email alert.

  • View the legend
  • Pollutant levels recorded for the hour up to 6pm Mon 18th May 2026

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North West & Merseyside

Latest measured levels based on data provided by the Environment Agency
Monitoring site Running 8 Hour mean Ozone
(µgm-3)
Hourly mean
Nitrogen dioxide
(µgm-3)
Max 15 min mean
Sulphur dioxide
(µgm-3)
Running 24 Hour mean
PM2.5
Particles
(µgm-3)
Running 24 Hour mean
PM10
Particles
(µgm-3)
Last
updated
Birkenhead Borough Road
Timeseries Graph
n/m11 (1 Low)n/m3 (1 Low)n/m 18/05/2026
19:00:00
Blackburn Accrington Road
Timeseries Graph
n/m23 (1 Low)n/mn/mn/m 18/05/2026
18:00:00
Blackburn Audley Park
Timeseries Graph
67 (3 Low)n/mn/m3 (1 Low)4 (1 Low)
*2
18/05/2026
18:00:00
Blackpool Marton
Timeseries Graph
78 (3 Low)4 (1 Low)n/m3 (1 Low)5 (1 Low)
*2
18/05/2026
19:00:00
Blackpool Whitegate Drive
Timeseries Graph
n/mn/mn/m3 (1 Low)n/m 18/05/2026
18:00:00
Bury Whitefield Roadside
Timeseries Graph
n/m11 (1 Low)n/mn/m8 (1 Low)
*1
18/05/2026
18:00:00
Carlisle Morton A595
Timeseries Graph
n/m10 (1 Low)n/m3 (1 Low)4 (1 Low)
*1
18/05/2026
19:00:00
Crewe Coppenhall
Timeseries Graph
75 (3 Low)4 (1 Low)n/m2 (1 Low)4 (1 Low)
*2
18/05/2026
19:00:00
Glazebury
Timeseries Graph
72 (3 Low)4 (1 Low)n/m3 (1 Low)5 (1 Low)
*2
18/05/2026
19:00:00
Liverpool Speke
Timeseries Graph
73 (3 Low)10 (1 Low)43 (1 Low)4 (1 Low)9 (1 Low)
*1
18/05/2026
19:00:00
Liverpool Thirlmere Park
Timeseries Graph
64 (2 Low)n/mn/m3 (1 Low)6 (1 Low)
*2
18/05/2026
18:00:00
Manchester Piccadilly
Timeseries Graph
61 (2 Low)19 (1 Low)2 (1 Low)5 (1 Low)8 (1 Low)
*2
18/05/2026
19:00:00
Manchester Sharston
Timeseries Graph
70 (3 Low)5 (1 Low)n/m3 (1 Low)5 (1 Low)
*2
18/05/2026
18:00:00
Middlewich St Michael's Way
Timeseries Graph
n/mn/mn/m3 (1 Low)n/m 18/05/2026
18:00:00
Preston
Timeseries Graph
72 (3 Low)12 (1 Low)n/m3 (1 Low)5 (1 Low)
*2
18/05/2026
19:00:00
Salford Eccles
Timeseries Graph
77 (3 Low)9 (1 Low)n/m3 (1 Low)6 (1 Low)
*2
18/05/2026
19:00:00
Shaw Crompton Way
Timeseries Graph
n/m20 (1 Low)n/mn/mn/m 18/05/2026
18:00:00
St Helens Linkway
Timeseries Graph
n/m26 (1 Low)n/mn/m9 (1 Low)
*1
18/05/2026
19:00:00
Tameside A635 Manchester Road
Timeseries Graph
n/mn/mn/m2 (1 Low)n/m 18/05/2026
18:00:00
Warrington
Timeseries Graph
n/m6 (1 Low)n/m3 (1 Low)6 (1 Low)
*1
18/05/2026
18:00:00
Widnes Milton Road
Timeseries Graph
n/m27 (1 Low)n/mn/mn/m 18/05/2026
18:00:00
Wigan Centre
Timeseries Graph
65 (2 Low)7 (1 Low)n/m3 (1 Low)6 (1 Low)
*2
18/05/2026
19:00:00
Wirral Tranmere
Timeseries Graph
75 (3 Low)8 (1 Low)n/m2 (1 Low)4 (1 Low)
*2
18/05/2026
19:00:00

» View the latest regional summary for this region

Legend

  • n/m means that the pollutant is not measured at that site
  • n/a means that no data were recorded for the period
  • *1: measurements are PM10 BAM 1020 heated
  • *2: measurements are PM10 FIDAS
  • *3: measurements are PM10 SEQ 47/50