Measurement period
AQT 3 & AQT 4 11.10.2019 - 17.8.2020
AQT 1 & AQT 2 18.11.2020 - ongoing
Innovative, indicative sensors for air quality sensing: here applied Vaisala AQT Sensors
Virolahti Background measurement station - Finnish Meteorological Institute
Installation of sensors on Russian territory of project - Institute of Radar Meteorology (St. Petersburg)
The air quality index used in Finland and adopted in the frame of the project as a common approach for the whole road
including of Russian and Finnish part
| Color |
Air quality |
Health impacts |
Other long term impacts |
|
good |
no known impacts |
mild environmental impacts |
|
satisfactory |
very unlikely |
mild environmental impacts |
|
fair |
unlikely |
clear impacts in vegetation and materials |
|
poor |
sensitive individuals may experience adverse effects |
clear impacts in vegetation and materials |
|
very poor |
sensitive population may experience adverse effects |
clear impacts in vegetation and materials |
A sub-index is assigned for each of the measured compounds and the highest sub-index determines the overall air quality index at the station.
Index values of the different compounds (sub-indexes), concentration micrograms per cubic meter air (µg/m3)
| Index classification |
SO2 |
NO2 |
PM10 |
PM2.5 |
O3 |
CO |
| good |
below 20 |
below 40 |
below 20 |
below 10 |
below 60 |
below 4000 |
| satisfactory |
20-80 |
40-70 |
20-50 |
10-25 |
60-100 |
4000-8000 |
| fair |
80-250 |
70-150 |
50-100 |
25-50 |
100-140 |
8000-20000 |
| poor |
250-350 |
150-200 |
100-200 |
50-75 |
140-180 |
20000-30000 |
| very poor |
above 350 |
above 200 |
above 200 |
above 75 |
above 180 |
above 30000 |
RU
