Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 36 |
4 |
0.5 |
||
| Belleville | 49 |
4 |
1.5 |
||
| Brampton | 33 |
7 |
3.5 |
||
| Brantford | 41 |
5 |
1.1 |
||
| Burlington | 36 |
4 |
5.4 |
||
| Chatham | 31 |
6 |
2.9 |
||
| Cornwall | 38 |
8 |
1.1 |
||
| Dorset | 47 |
6 |
|||
| Grand Bend | 24 |
2 |
0.4 |
||
| Guelph | 30 |
8 |
4.8 |
||
| Hamilton Downtown | 35 |
4 |
1.7 |
0 |
0.16 |
| Hamilton Mountain | 41 |
4 |
1.2 |
0 |
|
| Hamilton West | 38 |
3 |
1.6 |
||
| Kingston | 43 |
3 |
3.4 |
||
| Kitchener | 29 |
7 |
3.2 |
||
| London | 37 |
6 |
1.7 |
||
| Milton | 37 |
6 |
0.3 |
0.2 |
|
| Mississauga | 36 |
5 |
1.8 |
||
| Newmarket | 37 |
8 |
2.4 |
||
| North Bay | 38 |
6 |
0.3 |
||
| Oakville | 37 |
5 |
1.5 |
||
| Oshawa | 36 |
5 |
4.4 |
||
| Ottawa Downtown | 36 |
6 |
2.8 |
||
| Parry Sound | 34 |
4 |
0.7 |
||
| Peterborough | 22 |
5 |
3.8 |
||
| Port Stanley | 48 |
5 |
2.5 |
||
| Sarnia | 24 |
1 |
0.6 |
0.2 |
|
| Sault Ste. Marie | 23 |
1 |
1.2 |
0 |
|
| St. Catharines | 47 |
3 |
1.1 |
||
| Sudbury | 20 |
0 |
0.8 |
0 |
|
| Thunder Bay | 25 |
0 |
1.6 |
||
| Tiverton | 21 |
1 |
|||
| Toronto Downtown | 35 |
7 |
7.9 |
||
| Toronto East | 33 |
6 |
3.5 |
||
| Toronto North | 31 |
6 |
8 |
0.1 |
|
| Toronto West | 28 |
6 |
10.5 |
0 |
0.18 |
| Windsor Downtown | 46 |
6 |
4.6 |
0 |
0.15 |
| Windsor West | 44 |
6 |
5 |
0 |
Order by station location (east to west)
Note:
Ontario 1-hour AAQC for O3 = 80 ppb
Ontario 1-hour AAQC for NO2 = 200 ppb
Ontario 1-hour AAQC for SO2 = 40 ppb
Ontario 1-hour AAQC for CO = 30 ppm
Note: The pollutant concentrations on this web page are based on automatically polled data and have not undergone final verification.
