<b>BreatheAccra PM2.5 and ERA5 meteorology for Greater Accra, Ghana (April 2023 - February 2025): analysis dataset and reproducible code</b>

The deposit also contains derived series, model outputs, publication-resolution figures and the complete Python code that regenerates every number, table and figure in the associated paper and its supplementary material.</p><p dir="ltr">The analysis shows that PM2.5 over Accra has two seasonal maxima, in December–February (harmattan) and in July, and that both remain 20–28% above what same-day meteorology predicts.

It also checks ERA5 against automatic weather stations of the Trans-African Hydro-Meteorological Observatory (TAHMO) in Accra, and shows that the moisture predictors conventionally used together (air temperature, dew point, relative humidity) are severely collinear at this site. The TAHMO station data are not redistributed here, in line with TAHMO's data policy; the code that processes them is included, and they can be requested from TAHMO.</p><p dir="ltr">Version history.