Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 19 |
7 |
5.9 |
||
| Belleville | 24 |
6 |
2.9 |
||
| Brampton | 24 |
8 |
3.6 |
||
| Brantford | 24 |
8 |
1.1 |
||
| Burlington | 20 |
9 |
6.8 |
||
| Chatham | 24 |
7 |
3.8 |
||
| Cornwall | 3 |
5 |
18.9 |
||
| Dorset | 20 |
5 |
|||
| Grand Bend | 22 |
7 |
3.3 |
||
| Guelph | 21 |
8 |
4.3 |
||
| Hamilton Downtown | 21 |
9 |
5.2 |
0.6 |
0.15 |
| Hamilton Mountain | 22 |
8 |
1.9 |
0.1 |
|
| Hamilton West | 22 |
8 |
5.3 |
||
| Kingston | 29 |
5 |
1.7 |
||
| Kitchener | 21 |
9 |
4.1 |
||
| London | 19 |
10 |
6 |
||
| Milton | 23 |
9 |
4.5 |
0.3 |
|
| Mississauga | 23 |
9 |
3.9 |
||
| Newmarket | 21 |
10 |
6.2 |
||
| North Bay | 26 |
4 |
0.5 |
||
| Oakville | 23 |
9 |
3.8 |
||
| Oshawa | 7 |
14 |
15.7 |
||
| Ottawa Downtown | 19 |
5 |
5.8 |
||
| Parry Sound | 27 |
7 |
1.4 |
||
| Peterborough | 18 |
13 |
5.4 |
||
| Port Stanley | 27 |
7 |
2.2 |
||
| Sarnia | 21 |
7 |
6.9 |
1.4 |
|
| Sault Ste. Marie | 19 |
6 |
5.2 |
0.5 |
|
| St. Catharines | 24 |
7 |
4.1 |
||
| Sudbury | 22 |
2 |
0.6 |
5.2 |
|
| Thunder Bay | 26 |
2 |
3.6 |
||
| Tiverton | 25 |
6 |
|||
| Toronto Downtown | 17 |
10 |
10.9 |
||
| Toronto East | 18 |
10 |
9.7 |
||
| Toronto North | 12 |
12 |
15.9 |
0.4 |
|
| Toronto West | 8 |
11 |
17.2 |
0.1 |
0.2 |
| Windsor Downtown | 17 |
13 |
7.3 |
0.2 |
0.14 |
| Windsor West | 18 |
14 |
6.7 |
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.
