What is the legal limit for NO2 in the UK?

The UK legal limit for nitrogen dioxide (NO2) is an annual mean of 40 ug/m3, set under the Air Quality Directive. However, the World Health Organisation recommends a stricter guideline of 10 ug/m3, based on evidence that health effects occur at lower concentrations.

How does real-time NO2 monitoring differ from traditional approaches?

Traditional monitoring relies on a small number of reference-grade stations that provide city-wide averages. Real-time monitoring uses dense networks of sensors to deliver continuous, hyperlocal data -- revealing street-level variation, short-term spikes, and persistent hotspots that annual averages can mask.

Can Sensorbee monitors be used for regulatory compliance?

Sensorbee's particulate matter module is compliant with the MCERTS performance standard, providing verified and defensible data. The NO2 sensor meets the CEN/TS 17660-1:2022 standard. These indicative monitors complement reference stations as part of a wider monitoring network.

What makes solar-powered monitors suitable for urban deployment?

At just 1.9 kg, the Air Pro 2 mounts on light poles, temporary posts, or fences without mains power or broadband. Cellular connectivity and solar power mean monitors can be deployed in under 10 minutes at locations where traditional infrastructure would be impractical or costly.

Londons NO2-gränser: ULEZ-effekt

London uppnådde efterlevnad av lagliga NO2-gränser 2024 för första gången, nio år före expertprognoser — drivet i stor utsträckning av ULEZ och ihållande rättsligt tryck.

London uppfyller NO2-gränser: en vändpunkt för ren luft

Londons NO2-milstolpe

Hur London minskade NO2

Arbetet framåt

Varför realtidsövervakning spelar roll

Viktiga slutsatser

Vanliga frågor

Laglig NO2-gräns i Storbritannien?

Realtidsövervakning vs traditionella metoder?

Kan Sensorbee användas för regulatorisk efterlevnad?

Varför passar soldrivna monitorer för urban distribution?

Redo att komma igång med miljöövervakning?