| Date | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM |
| 17-Jun-13 | 47 | 42 | 41 | 40 | 37 | 31 | 25 | 19 | 18 | 24 | 30 | 38 | 43 | 43 | 42 | 44 | 45 | 45 | 45 | 42 | 39 | 36 | 39 | 37 |
| 18-Jun-13 | 24 | 24 | 21 | 16 | 14 | 12 | 14 | 11 | 15 | 15 | 18 | 16 | 19 | 25 | 32 | 31 | 28 | 33 | 33 | 28 | 30 | 27 | 25 | 25 |
| 19-Jun-13 | 26 | 26 | 27 | 26 | 24 |
Hamilton Downtown: Hourly Ozone O3 Concentrations
From June 17, 2013 to June 19, 2013.
Notes:
- Ontario 1-hour Ambient Air Quality Criterion (AAQC) for O3 = 80 ppb.
- The pollutant concentrations on this web page are based on automatically polled data and have not undergone final verification.
