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Hourly ambient fine particulate matter (PM2.5) data in micrograms per cubic metre from provincial ambient air quality monitoring stations across Nova Scotia up to the end of 2023.

Data are collected hourly and validated annually. Prior to 2003 data validation procedures were minimal. Post 2003 the data validation process was further refined and data may appear "less noisy". Blank values indicate the monitor was not functioning or the data was invalidated for that time period.

Hourly ambient ground-level ozone (O3) data in parts per billion from provincial ambient air quality monitoring stations across Nova Scotia up to the end of 2023.

Hourly ambient ground-level ozone (O3) data in parts per billion from provincial ambient air quality monitoring stations across Nova Scotia up to the end of 2023.

Hourly ambient nitrogen oxides (NOx, NO2, NO) data in parts per billion from provincial ambient air quality monitoring stations across Nova Scotia up to the end of 2023.

Hourly ambient sulphur dioxide (SO2) data in parts per billion from provincial ambient air quality monitoring stations across Nova Scotia up to the end of 2023.

Hourly ambient nitrogen oxides (NOx, NO2, NO) data in parts per billion from provincial ambient air quality monitoring stations across Nova Scotia up to the end of 2023.

Hourly ambient ground-level ozone (O3) data in parts per billion from provincial ambient air quality monitoring stations across Nova Scotia up to the end of 2023.

Hourly ambient carbon monoxide (CO) data in parts per million from provincial ambient air quality monitoring stations across Nova Scotia up to the end of 2023. This air quality station was established to replace the "Halifax Vogue" air quality monitoring station which ceased monitoring at the end...

Hourly ambient total reduced sulphur (TRS) data in parts per billion from provincial ambient air quality monitoring stations across Nova Scotia up to the end of 2023.