Martin Luther University of Germany has studied correlation between Covid 19 and air pollution. The research indicates that long term exposure to NO² may be one of the most important contributors to fatality from Coronavirus.
Although there is no causal link shown between air pollution and Covid 19, it is to be expected that people who have had long term exposure to high levels of NO² will suffer from respiratory damage which is directly linked to greater risk from the disease.
NO² concentrations in central Farnham (as recorded at the automatic monitor at The Royal Deer crossroads) have fallen by around 50% since the lockdown commenced and are now at a very acceptable level of 16 µg/m³. Interestingly however, the Particulate Matter PM₁₀ readings have so far not changed, pointing to the fact that Particulate Matter is mostly the result of factors other than traffic and for Farnham are at levels well below UK government objectives (20 µg/m³ in Farnham compared with 40 µg/m³ government guidelines).
The diffusion tube NO²monitoring system run by Waverley BC has had to be suspended for the time being because of the current crisis.