Data Archive - DEFRA UK Air

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} </script> <div id="navigation"> <nav class="navbar navbar-inverse navbar-inverse-primary"> <div class="container"> <div class="navbar-header"> <p class="navbar-text visible-xs-inline-block">Menu</p> <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar"> <span class="sr-only">Toggle navigation</span> <span class="icon-bar top-bar"></span> <span class="icon-bar middle-bar"></span> <span class="icon-bar bottom-bar"></span> </button> </div> <div id="navbar" class="collapse navbar-collapse navbar-site"> <ul class="nav nav-justified navbar-site-text nav-theme"> <li ><a href="/">Home</a></li> <li ><a href="/air-pollution"><span class='hidden-sm'>Air Pollution</span> <span class='visible-sm'>Pollution</span></a></li> <li class="active" ><a href="/data">Data</a></li> <li ><a href="/networks"><span class='hidden-sm'>Monitoring Networks</span> <span class='visible-sm'>Monitoring</span></a></li> <li ><a href="/library/">Library</a></li> <li ><a href="/research/"><span class='hidden-sm'>Science & Research</span> <span class='visible-sm'>Research</span></a></li> <li ><a href="/aqma">AQMAS</a></li> <li ><a href="/sca">SCA</a></li> </ul> </div> </div> </nav> </div> </header>  <section id="breadcrumbs"> <div class="container"> <ul class="breadcrumb"> <li><a href="https://uk-air.defra.gov.uk/">Home</a></li><li><span class="active-breadcrumb">Data Archive</span></li> </ul> <a name="startcontent" id="startcontent"></a> </div> </section>  <main id="content"> <div class="container"> <div class="row"> <div class="col-md-9"> <div class="row document-body"> <div class="col-md-12"> <h1>Data Archive</h1> </div> <div class="col-md-12"> <div class="jumbotron"> <h2 class="jumbotron__title h3"> <a href="">Data Tools</a> </h2> <ul> <li class="jumbotron__item"> <a href="data_selector">Get measured data and simple statistics</a> </li> <li class="jumbotron__item"> <a href="exceedance">Descriptive Statistics (annual and exceedance)</a> </li> <li class="jumbotron__item"> <a href="/networks/find-sites?action=region">Pre-Formatted files of automatic monitoring data (raw data)</a> </li> <li class="jumbotron__item"> <a href="/data/data-availability">Data availability</a> </li> <li class="jumbotron__item"> <a href="/compliance-data">Annual Compliance Assessment Data</a> </li> <li class="jumbotron__item"> <a href="/pm25targets/progress">Particulate matter (PM2.5) Targets (PERT and AMCT)</a> </li> </ul> </div> </div> <div class="col-md-12"> <p><p class="lightborder">Reported measurement uncertainty for TEOM FDMS analysers has been increased from 8.7 to 11.8% for PM<sub>10</sub> and from 16.4 to 18.2% for PM<sub>2.5</sub> with effect from 1/1/2019. A change in the manufacturing of the tapered element filter has led to the manufacturer recommending the relaxing of tolerances for testing the k0 calibration factor. The uncertainty limit for the equivalence standard method is 25%. The <a href="https://uk-air.defra.gov.uk/networks/monitoring-methods?view=pm-equivalence"> equivalence status of the TEOM FDMS analyser</a> is unaffected by this change.</p> <h3>Introduction to monitoring data</h3> <p>There are three types of data stored in this section and these are outlined below.</p> <h4>1. Monitoring data</h4> <p>There are over 1500 sites across the UK that monitor air quality. They are organised into networks that gather a particular kind of information, using a particular method. There are two major types - <a href="../networks/network-info?view=automatic">automatic</a> and <a href="../networks/network-info?view=non-automatic">non-automatic</a> networks. The <a href="../networks/">Monitoring Networks section</a> provides further network information. Download data from the networks using the Data Selector Tool or download raw automatic data using the preformatted files link.</p> <h4>2. Descriptive statistics</h4> <p>For each monitoring site you can select a range of statistics which are relevant to the particular monitoring method. Basic statistics are annual mean, maximum and minimum values, with daily means, monthly means and a range of percentile values available where these are meaningful. Data from the UK Urban NO<sub>2</sub> Network can be found <a href="exceedance?f_group_id=31/">using this option</a>.</p> <h4>3. Exceedance statistics</h4> <p>Exceedance statistics provide information about concentrations above a specific threshold value. The exact concentration and the metric used varies by pollutant and purpose. A selection of commonly used examples are the UK Air Quality Objectives, EU Limit and Target Values, Critical Loads, the health-effects based system of four bands and a 1-10 index and the Indicators of Sustainable development - the average number of days per site on which pollution levels were above National Air Quality Standards.</p> <p>These links will provide more information on the <a href="../air-pollution/uk-eu-limits">UK and EU Objectives and Limits</a> and the <a href="../air-pollution/daqi">Air Pollution Index and Banding System</a>.</p> <p>You can select any of these exceedance statistics for a range of time periods, pollutants and locations.</p> <h3>Licencing</h3> <p>Information on <a href="https://uk-air.defra.gov.uk/">uk-air.defra.gov.uk</a>  is published by Defra and the Devolved Administrations under the <a href="http://www.nationalarchives.gov.uk/doc/open-government-licence/version/2/">Open Government Licence</a> (OGL) and subject to the terms described in the "licence" or "constraints" of the OGL, except where otherwise noted.  Under the OGL you are free to:</p> <ul> <li>copy, publish, distribute and transmit the information</li> <li>adapt the information</li> <li>exploit the information commercially and non-commercially for example, by combining it with other information, or by including it in your own product or application</li> </ul> <p>You must, where you do any of the above, acknowledge Defra and <a href="https://uk-air.defra.gov.uk/">uk-air.defra.gov.uk</a> as the source of the information by including the following attribution statement in reports, web pages or derived data products and, where possible, provide a link to the OGL licence.</p> <p>© Crown 2025 copyright Defra via uk-air.defra.gov.uk, licenced under the <a href="http://www.nationalarchives.gov.uk/doc/open-government-licence/version/2/">Open Government Licence</a> (OGL).</p> <p>The data and information made available through on this website is subject to Crown copyright protection unless otherwise indicated. Read the <a href="http://www.nationalarchives.gov.uk/information-management/our-services/crown-copyright.htm">Crown copyright page</a> for more information. See also <a href="https://www.gov.uk/support/terms-conditions">https://www.gov.uk/support/terms-conditions</a>.</p> <p>This website is maintained and hosted by <a href="http://ee.ricardo.com/">Ricardo Energy & Environment</a> on behalf of Defra and the Devolved Administrations.</p></p> </div>  <div class="col-md-12"> </div> </div> </div> <div class="col-md-3"> <div class="row"> <div class="col-md-12"> <ul class="list-group sidebar"> <li class="list-group-item sidebar__item sidebar__heading"> <h3 class="sidebar__title"><a href="https://uk-air.defra.gov.uk/data/">Data Archive</a></h3> </li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/pm25targets/progress">PM<sub>2.5</sub> Targets (PERT and AMCT)</a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/pm25targets/calculation">Methodology for calculating progress towards the PM<sub>2.5</sub> targets</a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/data_selector">Data Selector</a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/exceedance">Annual and Exceedance Statistics</a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/data-availability">Data availability</a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/DAQI-regional-data">DAQI regional data</a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/compliance-data">Air quality compliance data</a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/data-catalogue">UK Air Quality Data Catalogue</a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/particle-data">UK Particle Monitoring Programme</a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/maryleboneroad">Marylebone Road, Non-Automatic Data </a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/pah-data">PAH data </a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/tomps-data">TOMPs data </a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/metals-data">Metals data </a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/comparing-data">Comparing data </a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/gis-mapping">UK Ambient Air Quality Interactive Map</a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/modelling-data">Modelled air quality data </a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/openair">Openair - data analysis tool</a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/laqm-background-home">Background Maps</a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/ozone-data">Stratospheric Ozone Data</a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/uv-data">UV Radiation Data</a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/uv-index-graphs">UV Index Graphs</a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/wms-services">WMS Services</a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/so/about">Spatial Objects</a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/atom-dls">Atom Download Services</a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/about_sos">Sensor Observation Service</a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/density">Population Density of UK</a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/critical-load">Critical Loads</a></li> <li class="list-group-item sidebar__item"><a href="https://uk-air.defra.gov.uk/data/gis-licences">Licences of air quality mapping data</a></li> </ul> <ul class="list-group sidebar"> <li class="list-group-item sidebar__item sidebar__heading"> <h3 class="sidebar__title"><a href="#">You may also be interested in...</a></h3> </li> <li class="list-group-item sidebar__item"><a href="https://naei.beis.gov.uk/">National Atmospheric Emissions Inventory (NAEI)</a></li> <li class="list-group-item sidebar__item"><a href="https://davidcarslaw.github.io/openair/">The Openair Project</a></li> <li class="list-group-item sidebar__item"><a href="https://ec.europa.eu/environment/air/index_en.htm">EU air quality information</a></li> <li class="list-group-item sidebar__item"><a href="https://www.eea.europa.eu/themes/air/explore-air-pollution-data">Explore European Air Quality Data</a></li> <li class="list-group-item sidebar__item"><a href="https://macc-raq.gmes-atmosphere.eu/index.php">MACC - Monitoring Atmospheric Composition and Climate</a></li> <li class="list-group-item sidebar__item"><a href="https://www.copernicus.eu/en">Copernicus</a></li> <li class="list-group-item sidebar__item"><a href="https://www.eea.europa.eu/themes/air/air-quality-index/index">European Air Quality Index</a></li> <li class="list-group-item sidebar__item"><a href="/about-these-pages#licence">Data licence</a></li> </ul> </div> </div> </div> </div> </div> </main>  <footer id="global-footer"> <div class="footer"> <div class="container"> <div class="row"> <div class="col-md-8"> <div class="footer-navigation"> <h3 class="footer-navigation__title">Main Navigation</h3> <div class="row"> <div class="footer-navigation__list"> <div class="col-md-4 col-sm-4"> <ul class="list-unstyled"> <li><a href="/">Home</a></li> <li><a href="/air-pollution"><span class='hidden-sm'>Air Pollution</span> <span class='visible-sm'>Pollution</span></a></li> <li><a href="/data">Data</a></li> </ul> </div> <div class="col-md-4 col-sm-4"> <ul class="list-unstyled"> <li><a href="/networks"><span class='hidden-sm'>Monitoring Networks</span> <span class='visible-sm'>Monitoring</span></a></li> <li><a href="/library/">Library</a></li> <li><a href="/research/"><span class='hidden-sm'>Science & Research</span> <span class='visible-sm'>Research</span></a></li> </ul> </div> <div class="col-md-4 col-sm-4"> <ul class="list-unstyled"> <li><a href="/aqma">AQMAS</a></li> <li><a href="/sca">SCA</a></li> </ul> </div> </div> </div> </div> </div> </div> <div class="row"> <div class="col-md-12"> <div class="footer-logo"> <hr/> <div class="row"> <div class="col-md-2 col-sm-2 col-xs-6"> <img src="/images/theme/department_defra_logo.png" class="img-responsive" alt="DEFRA department logo"> </div> <div class="col-md-10 col-sm-10 col-xs-12"> <div class="row"> <div class="col-md-12"> <div class="footer-navigation__list"> <ul class="list-inline"> <li><a href="/cookies">Cookies policy</a></li> <li><a href="/accessibility">Accessibility statement</a></li> <li><a href="/about-these-pages">Terms & conditions</a></li> <li><a href="/news">News & Events</a></li> <li><a href="https://www.gov.uk/government/organisations/department-for-environment-food-rural-affairs/about/recruitment" target="_blank">Jobs (opens in a new tab)</a></li> <li><a href="/privacy">Privacy</a></li> <li><a href="https://www.gov.uk/help">Help</a></li> <li><a href="https://www.gov.uk/government/organisations/department-for-environment-food-rural-affairs#org-contacts" target="_blank">Contact us (opens in a new tab)</a></li> <li><a href="mailto:aqinfo@ricardo.com?subject=User%20Feedback">Feedback</a></li> </ul> </div> </div> <div class="col-md-12"> <p class="text-muted">All content is available under the Open Government Licence v3.0, except where otherwise stated.</p> <p class="text-muted">漏 Crown copyright</p> </div> </div> </div> </div> </div> </div> </div> </div> </div> </footer>  <script src="/build/main.js?c=a1dd2390222"></script> <script type="text/javascript" src="/js/javascript.js?c=250s520s1823392723sw2402"></script>  <script> (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){ (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o), m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m) })(window,document,'script','https://www.google-analytics.com/analytics.js','ga'); ga('create', 'UA-6712674-5', '.defra.gov.uk'); ga('send', 'pageview'); ga('create', 'UA-20704586-2', 'auto', 'ricardoTracker'); ga('ricardoTracker.send', 'pageview'); </script>   <script async src="https://www.googletagmanager.com/gtag/js?id=G-951W5REJQS"></script> <script> window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'G-951W5REJQS'); </script> </body> </html>

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Data Archive - DEFRA UK Air - GOV.UK