Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 10 |
4 |
32.1 |
||
| Belleville | 29 |
3 |
6.9 |
||
| Brampton | 28 |
3 |
9.8 |
||
| Brantford | 13 |
6 |
17.8 |
||
| Burlington | 21 |
4 |
17.3 |
||
| Chatham | 29 |
4 |
15.3 |
||
| Cornwall | 32 |
3 |
2.5 |
||
| Dorset | 27 |
2 |
|||
| Grand Bend | 36 |
2 |
0.8 |
||
| Guelph | 34 |
4 |
4.4 |
||
| Hamilton Downtown | 18 |
5 |
16.2 |
0.3 |
0.25 |
| Hamilton Mountain | 27 |
3 |
8.2 |
4.3 |
|
| Hamilton West | 16 |
4 |
21.1 |
||
| Kingston | 28 |
3 |
6.5 |
||
| Kitchener | 29 |
4 |
7.9 |
||
| London | 26 |
3 |
15.7 |
||
| Milton | 29 |
3 |
8.2 |
0.3 |
|
| Mississauga | 27 |
3 |
10.9 |
||
| Newmarket | 24 |
3 |
13 |
||
| North Bay | 10 |
3 |
26 |
||
| Oakville | 30 |
3 |
9.1 |
||
| Oshawa | 31 |
3 |
3.6 |
||
| Ottawa Downtown | 31 |
3 |
4.4 |
||
| Parry Sound | 25 |
6 |
4.5 |
||
| Peterborough | 32 |
3 |
2.2 |
||
| Port Stanley | 36 |
3 |
1.7 |
||
| Sarnia | 37 |
3 |
2 |
N/A |
|
| Sault Ste. Marie | 30 |
3 |
6 |
0.5 |
|
| St. Catharines | 29 |
4 |
9 |
||
| Sudbury | 27 |
2 |
8.6 |
0.9 |
|
| Thunder Bay | 14 |
6 |
25.5 |
||
| Tiverton | 33 |
1 |
|||
| Toronto Downtown | 20 |
2 |
N/A |
||
| Toronto East | 20 |
3 |
17.7 |
||
| Toronto North | 14 |
5 |
23.7 |
0.6 |
|
| Toronto West | 7 |
5 |
29.9 |
0.1 |
0.22 |
| Windsor Downtown | 21 |
5 |
21.8 |
0.2 |
0.21 |
| Windsor West | 17 |
5 |
23.3 |
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.
