Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 17 |
16 |
8.6 |
||
| Belleville | 24 |
1 |
3 |
||
| Brampton | 10 |
3 |
15.2 |
||
| Brantford | 17 |
3 |
4.4 |
||
| Burlington | 31 |
1 |
1.3 |
||
| Chatham | 25 |
4 |
7.4 |
||
| Cornwall | 9 |
5 |
13.1 |
||
| Dorset | 13 |
2 |
|||
| Grand Bend | 21 |
5 |
2 |
||
| Guelph | 16 |
3 |
8.6 |
||
| Hamilton Downtown | 18 |
3 |
10.4 |
0.3 |
0.16 |
| Hamilton Mountain | 24 |
2 |
4 |
0 |
|
| Hamilton West | 2 |
6 |
21.1 |
||
| Kingston | 8 |
5 |
15.3 |
||
| Kitchener | 13 |
4 |
10.1 |
||
| London | 21 |
8 |
4.2 |
||
| Milton | 15 |
3 |
12.3 |
0.3 |
|
| Mississauga | 4 |
3 |
12.2 |
||
| Newmarket | 11 |
4 |
13.2 |
||
| North Bay | 4 |
6 |
11.1 |
||
| Oakville | 18 |
3 |
10.5 |
||
| Oshawa | 3 |
3 |
8.6 |
||
| Ottawa Downtown | 5 |
6 |
20 |
||
| Parry Sound | 11 |
5 |
9 |
||
| Peterborough | 18 |
2 |
5.3 |
||
| Port Stanley | 24 |
2 |
1.4 |
||
| Sarnia | 12 |
4 |
15.4 |
0.1 |
|
| Sault Ste. Marie | 17 |
3 |
5.4 |
0.1 |
|
| St. Catharines | 19 |
3 |
6.8 |
||
| Sudbury | 11 |
2 |
19.1 |
0.1 |
|
| Thunder Bay | 29 |
2 |
2.4 |
||
| Tiverton | 19 |
2 |
|||
| Toronto Downtown | 16 |
4 |
14.8 |
||
| Toronto East | 12 |
5 |
13.5 |
||
| Toronto North | 11 |
3 |
8.7 |
0.3 |
|
| Toronto West | 13 |
4 |
13.8 |
0 |
0.22 |
| Windsor Downtown | 26 |
4 |
5.7 |
0 |
0.16 |
| Windsor West | 27 |
4 |
3.4 |
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.
