Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 4 |
9 |
6.1 |
||
| Belleville | 21 |
7 |
2.8 |
||
| Brampton | 13 |
8 |
6 |
||
| Brantford | 11 |
7 |
1.9 |
||
| Burlington | 15 |
7 |
10 |
||
| Chatham | 26 |
6 |
4 |
||
| Cornwall | 11 |
4 |
6 |
||
| Dorset | 1 |
7 |
|||
| Grand Bend | 4 |
6 |
2.1 |
||
| Guelph | 13 |
8 |
3.7 |
||
| Hamilton Downtown | 15 |
8 |
4.6 |
0.1 |
0.2 |
| Hamilton Mountain | 17 |
8 |
5.2 |
0.3 |
|
| Hamilton West | 15 |
10 |
5.7 |
||
| Kingston | 17 |
6 |
3.4 |
||
| Kitchener | 8 |
9 |
6.5 |
||
| London | 4 |
8 |
4.4 |
||
| Milton | 10 |
10 |
8.2 |
0.3 |
|
| Mississauga | 10 |
7 |
7 |
||
| Newmarket | 6 |
9 |
9.6 |
||
| North Bay | 19 |
7 |
0 |
||
| Oakville | 26 |
9 |
9.2 |
||
| Oshawa | 3 |
9 |
2.9 |
||
| Ottawa Downtown | 12 |
5 |
4.5 |
||
| Parry Sound | 17 |
6 |
0.5 |
||
| Peterborough | 13 |
6 |
1.7 |
||
| Port Stanley | 18 |
7 |
0.6 |
||
| Sarnia | 20 |
9 |
5.5 |
0 |
|
| Sault Ste. Marie | 19 |
6 |
1.9 |
0 |
|
| St. Catharines | 30 |
4 |
1.6 |
||
| Sudbury | 19 |
6 |
1.8 |
0 |
|
| Thunder Bay | 17 |
6 |
2.9 |
||
| Tiverton | 7 |
6 |
|||
| Toronto Downtown | 14 |
15 |
19.1 |
||
| Toronto East | 5 |
10 |
12.8 |
||
| Toronto North | 12 |
9 |
3.9 |
0 |
|
| Toronto West | 8 |
10 |
14 |
0 |
0.27 |
| Windsor Downtown | 29 |
7 |
5.1 |
0 |
0.19 |
| Windsor West | 31 |
7 |
2.6 |
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.
