During a long time SO 2 has been the most important pollutant accelerating atmospheric corrosion of several materials including objects of cultural heritage. The quantification of the effect of pollution has been subject of several projects performed in the last decades in Europe and Northern America ( ICP Materials and MULTI-ASSESS) and in Asia and Southern Africa (RAPIDC). Data from these programmes show that the S-pollution has decreased dramatically in the industrial countries of the temperate zone, while the SO 2 levels are high in several places in the RAPIDC network. Dose-response functions (DRF) have been developed for the new multipollutant situation in the temperate zone containing apart of SO 2 and pH also HNO 3 and particulate matter. The results from temperate zone can not directly be used in subtropical/tropical regions. Recent data will allow development of DRF:s for these regions. The developed DRF:s contain apart of pollution also climatic parameters used in climate change models and they have been used in the NOAHś ARK project for estimations of effects of global climate changes on atmospheric corrosion in Europe. © 2009 by NACE International.