The principle pollutants associated with the airport are:
- Nitrogen oxides (NOx) (these give rise to nitrogen dioxide (NO2)
- Fine airbourne particles (PM10)
- Carbon Dioxide (CO2) (a greenhouse gas, but not significant on a local level)
- Hydrocarbons (HCs)
The principal airport related sources of these pollutants are:
- Aircraft engines, including auxiliary power units
- Surface vehicles, both airside and landside
- Ground support equipment
- Power and heat generation plant
The airport continually monitors Nitrogen Dioxide (NO2) levels using passive diffusion tubes from seven locations around the airport site and one site next to the Air Traffic Control Tower in partnership with Doncaster MBC. The (NO2) levels in the vicinity of the airport are difficult to aportion solely to aircraft emmissions alone as (NO2) is comprised from other sources principally road traffic and other industrial activities. The airport reports air quality levels to the Airport Consulatative Committee (ACC) on an annual basis in the ACC annual report, now named Corporate Social Responsibility Report.
There is a requirement for all airside vehicles to comply with MOT emissions standards under the Civil Aviation Publication 642 to qualify for an airside pass. In addition to the regulations the airport has implemented an Air Quality Action Plan to minimise emissions. The Action Plan sets out measures that will be employed to control the release of the above pollutants to mitigate the impact of the airport on air quality.