Looking at the data taken over the last few years, it appears that there have been
marginal improvements in the quality of Brazil's air. In 2018, Brazil came in
with a PM2.5 reading of 16.29 μg/m³, which was then subsequently followed by
the more recent reading of 15.77 μg/m³. Whilst this represents only a marginal
gain, when it comes to matters of air pollution, any level of improvement can
be seen a positive step in the right direction, particularly in recent years
when air pollution has become a greater concern for many countries round the world.