Air pollution limit values for the protection of health
| Pollutant | Averaging interval | Assessment threshold [μg.m-3] | Limit value [μg.m-3] LV |
Margin of tolerance for 2005 [μg.m-3] MT |
Date for achieving LV | |
| Lower LAT |
Upper UAT |
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| SO2 | 1 hour | 350 max. 24x/year |
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| 24 hours | 50 max. 3x/year |
75 max. 3x/year |
125 max. 3x/year |
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| PM10 | 24 hours | 20 max. 7/year |
30 max. 7x/year |
50 max. 35x/year |
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| calendar year | 10 | 14 | 40 | |||
| NO2 | 1 hour | 100 max. 18x/year |
140 max. 18x/year |
200 max. 18x/year |
50 | 1.1.2010 |
| calendar year | 26 | 32 | 40 | 10 | 1.1.2010 | |
| Pb | calendar year | 0.25 | 0.35 | 0.5 | ||
| CO | max. daily 8-h running average | 5 000 | 7 000 | 10 000 | ||
| Benzene | calendar year | 2 | 3.5 | 5 | 5 | 1.1.2010 |
For PM2.5 particles the new draft of EU directive sets the limit for annual average 25 μg.m-3.