Hertfordshire and Bedfordshire Monitoring Data
Dacorum London Road (HB018)
Latitude: 51.738041
Longitude: -0.470504
Date Started: 18/11/2024
Longitude: -0.470504
Date Started: 18/11/2024
Altitude: 81 metres
Inlet Height: 2 metres
Environment: Urban Traffic
Inlet Height: 2 metres
Environment: Urban Traffic
Site Comments
Site adjacent to commercial/retail unit, near to busy junction with residential properties in the vicinity.
Site adjacent to commercial/retail unit, near to busy junction with residential properties in the vicinity.
Latest Data
This monitoring site data was last updated: 30/04/2025 09:00
| Parameter | Pollution Band | Concentration | Period |
|---|---|---|---|
| PM10 particulate matter (Hourly measured) | Low (Index 3) | 35 µg/m3 (FIDAS) | 24 Hour mean |
| PM2.5 particulate matter (Hourly measured) | Low (Index 2) | 13 µg/m3 (Ref.eq) | 24 Hour mean |
| Nitrogen dioxide (NO2) | Low (Index 1) | 32 µg/m3 | hourly mean |
| Nitric oxide (NO) | not applicable | 16 µg/m3 | hourly mean |
| Nitrogen oxides as nitrogen dioxide (NOx as NO2) | not applicable | 56 µg/m3 | hourly mean |
Note: Values are based on provisional data. Data are GMT hour ending.
PM10 is measured as a running 24 hour mean, up to the current hour, and the band/index is calculated accordingly.
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