AURN Monitoring Site Monitoring Data
Portsmouth (PMTH, an AURN site)
Latitude: 50.828810
Longitude: -1.068583
Date Started: 01/01/2001
Longitude: -1.068583
Date Started: 01/01/2001
Altitude: 5 metres
Environment: Urban Background
Environment: Urban Background
Latest Data
This monitoring site data was last updated: 21/11/2024 11:00
| Parameter | Pollution Band | Concentration | Period |
|---|---|---|---|
| Nitrogen dioxide (NO2) | Low (Index 1) | 27 µg/m3 | hourly mean |
| Ozone (O3) | Low (Index 1) | 28 µg/m3 | 8 Hour mean |
| PM10 particulate matter (Hourly measured) | Low (Index 1) | 9 µg/m3 (FIDAS) | 24 Hour mean |
| PM2.5 particulate matter (Hourly measured) | Low (Index 1) | 5 µg/m3 (Ref.eq) | 24 Hour mean |
| Nitric oxide (NO) | not applicable | 4 µg/m3 | hourly mean |
| Nitrogen oxides as nitrogen dioxide (NOx as NO2) | not applicable | 34 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.