Table 2.
Fine particulate levels in indoor settings in various studies (some of which were before and after studies around local or national smokefree laws)
| Settings | Legally non-smoking settings (Mean PM2.5 in μg/m3) | Settings with smoking permitted (Mean PM2.5 in μg/m3) |
| Ireland: pubs [28] | 6 | 36 |
| Boston, Massachusetts (USA): bars [29] | 8* | 179* |
| Austin, Texas: bars [30] | 11 | 151 |
| Delaware (USA): bars/restaurants (US)** [10] | 11 | 160 |
| New Zealand: All pubs, bars, & restaurants in this study | 16 | -- |
| Malaysia: bars, nightclubs and discos [31] | 22 | 537 |
| Western New York (USA): bars/restaurants [7] | 25 | 324 |
| Thailand: bars, nightclubs and discos [31] | 27 | 661 |
| 20 US states & Puerto Rico: hospitality venues (n = 790) [32] | 28 | 273 |
| Germany: bars/discos (median values) [33] | -- | 195/869 |
| North West England: pubs [8] | -- | 286 |
| 24-country study of 932 indoor venues [4] | -- | 317 |
* Actually "PM3.5", though this is closely related to PM2.5 as described in this study.
** Based on the six bars/restaurants (and excluding the casino and pool hall).