- Ambient Air Quality Status of Sulphur Dioxide (SO2) Levels (Annual Average) At Selected Cities and Locations under National Air Quality Monitoring Programme (NAMP) in Kerala (2020)
- Ambient Air Quality Status of Nitrogen Dioxide (NO2) Levels (Annual Average) At Selected Cities and Locations under National Air Quality Monitoring Programme (NAMP) in Kerala (2020)
- Ambient Air Quality Status of PM10 (Particulate Matter Less than 10 Micron) Levels (Annual Average) At Selected Cities and Locations under National Air Quality Monitoring Programme (NAMP) in Kerala (2020)