Local Authority Details
CSV data files for Chilbolton Observatory monitoring site
Listed below are links to CSV data files for Chilbolton Observatory. These files contain one year's automatic monitoring data and are updated daily. There are two formats to the files, firstly a file containing all pollutants measured at the site for each year followed by pollutant specific data files grouped by monitoring network.
To get the very latest data for Chilbolton Observatory use the Data Selector.
| 2025 (CSV) | 2024 (CSV) | 2023 (CSV) | 2022 (CSV) | 2021 (CSV) | 2020 (CSV) | 2019 (CSV) | 2018 (CSV) |
| 2017 (CSV) | 2016 (CSV) |
|
2025 (Column format) (CSV) 2025 (Table format) (CSV) |
2024 (Column format) (CSV) 2024 (Table format) (CSV) |
2023 (Column format) (CSV) 2023 (Table format) (CSV) |
2022 (Column format) (CSV) 2022 (Table format) (CSV) |
|
2021 (Column format) (CSV) 2021 (Table format) (CSV) |
2020 (Column format) (CSV) 2020 (Table format) (CSV) |
2019 (Column format) (CSV) 2019 (Table format) (CSV) |
2018 (Column format) (CSV) 2018 (Table format) (CSV) |
|
2017 (Column format) (CSV) 2017 (Table format) (CSV) |
2016 (Column format) (CSV) 2016 (Table format) (CSV) |
| Ozone | Nitric oxide | Nitrogen dioxide | Nitrogen oxides as nitrogen dioxide | Sulphur dioxide | PM10 particulate matter (Hourly measured) | Non-volatile PM10 (Hourly measured) | Volatile PM10 (Hourly measured) | PM2.5 particulate matter (Hourly measured) | Non-volatile PM2.5 (Hourly measured) | Volatile PM2.5 (Hourly measured) |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | ||||
| 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | ||||
| 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | ||||
| 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | ||||
| 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | ||||
| 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | ||||
| 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | ||||
| 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) |
| 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) |
| 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) |
| ethane | ethene | ethyne | propane | propene | iso-butane | n-butane | 1-butene | trans-2-butene | cis-2-butene | iso-pentane | n-pentane | 1,3-butadiene | trans-2-pentene | 1-pentene | 2-methylpentane | isoprene | n-hexane | n-heptane | iso-octane | n-octane | benzene | toluene | ethylbenzene | m+p-xylene | o-xylene | 1,2,3-trimethylbenzene | 1,2,4-trimethylbenzene | 1,3,5-trimethylbenzene |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | ||||||||
| 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) |
| 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) |
| 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) |
| 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) |
| 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) |
| 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) |
| 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) |
| 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) |
| 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) |
| Black Carbon (880nm) | UV Particulate Matter (UV-BC) | Infra Red Particulate matter (950nm) | Red Particulate matter (660nm) | Yellow Particulate matter (590nm) | Blue Particulate matter (470nm) | UV Particulate Matter (370nm) |
|---|---|---|---|---|---|---|
| 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) |
| 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) |
| 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) |
| 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) |
| 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) |
| 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) |
| 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) |
| 2018 (CSV) | 2018 (CSV) | |||||
| 2017 (CSV) | 2017 (CSV) | |||||
| 2016 (CSV) | 2016 (CSV) |
| calcium in PM10 | chloride in PM10 | potassium in PM10 | magnesium in PM10 | sodium in PM10 | ammonium in PM10 | nitrate in PM10 | sulphate in PM10 | calcium in PM2.5 | chloride in PM2.5 | potassium in PM2.5 | magnesium in PM2.5 | sodium in PM2.5 | ammonium in PM2.5 | nitrate in PM2.5 | sulphate in PM2.5 | gaseous hydrochloric acid | gaseous nitrous acid | gaseous nitric acid | gaseous ammonia | gaseous sulphur dioxide |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) | 2025 (CSV) |
| 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) | 2024 (CSV) |
| 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) | 2023 (CSV) |
| 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) | 2022 (CSV) |
| 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) | 2021 (CSV) |
| 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) | 2020 (CSV) |
| 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) | 2019 (CSV) |
| 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) | 2018 (CSV) |
| 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) | 2017 (CSV) |
| 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) | 2016 (CSV) |