Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 3 |
18 |
12.9 |
||
| Belleville | 22 |
4 |
3.3 |
||
| Brampton | 11 |
5 |
8 |
||
| Brantford | 12 |
5 |
2.3 |
||
| Burlington | 22 |
5 |
8.6 |
||
| Chatham | 19 |
6 |
3.2 |
||
| Cornwall | 35 |
2 |
1.8 |
||
| Dorset | 7 |
4 |
|||
| Grand Bend | 7 |
6 |
1.4 |
||
| Guelph | 2 |
4 |
6.6 |
||
| Hamilton Downtown | 18 |
4 |
7.4 |
0.6 |
0.21 |
| Hamilton Mountain | 19 |
4 |
4 |
0.1 |
|
| Hamilton West | 6 |
4 |
11 |
||
| Kingston | 32 |
3 |
1.5 |
||
| Kitchener | 2 |
5 |
8 |
||
| London | 1 |
8 |
5.2 |
||
| Milton | 8 |
5 |
13 |
0.2 |
|
| Mississauga | 3 |
7 |
17.2 |
||
| Newmarket | 5 |
7 |
9.2 |
||
| North Bay | 13 |
4 |
2.4 |
||
| Oakville | 9 |
7 |
15.9 |
||
| Oshawa | 4 |
4 |
1.5 |
||
| Ottawa Downtown | 25 |
3 |
3.1 |
||
| Parry Sound | 8 |
5 |
6.2 |
||
| Peterborough | 15 |
4 |
3.5 |
||
| Port Stanley | 18 |
6 |
3.1 |
||
| Sarnia | 2 |
7 |
15.6 |
0.2 |
|
| Sault Ste. Marie | 19 |
2 |
0.7 |
0.1 |
|
| St. Catharines | 3 |
6 |
8.1 |
||
| Sudbury | 28 |
4 |
1.8 |
0.8 |
|
| Thunder Bay | 17 |
1 |
1 |
||
| Tiverton | 16 |
5 |
|||
| Toronto Downtown | 11 |
7 |
15.9 |
||
| Toronto East | 5 |
6 |
18.7 |
||
| Toronto North | 1 |
10 |
16.8 |
0.4 |
|
| Toronto West | 2 |
8 |
19.3 |
0.1 |
0.31 |
| Windsor Downtown | 2 |
41 |
19.8 |
0 |
0.47 |
| Windsor West | N/A |
21 |
15.6 |
0.1 |
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.
