Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 21 |
4 |
23.7 |
||
| Belleville | 34 |
5 |
7.9 |
||
| Brampton | 15 |
5 |
25.6 |
||
| Brantford | 37 |
16 |
2.8 |
||
| Burlington | 37 |
4 |
7 |
||
| Chatham | 17 |
6 |
30.5 |
||
| Cornwall | 34 |
3 |
8.5 |
||
| Dorset | 33 |
2 |
|||
| Grand Bend | 38 |
2 |
1.1 |
||
| Guelph | 42 |
2 |
2.8 |
||
| Hamilton Downtown | 34 |
4 |
6.9 |
0.2 |
0.17 |
| Hamilton Mountain | 36 |
4 |
5.9 |
0.1 |
|
| Hamilton West | 34 |
5 |
8.7 |
||
| Kingston | 1 |
8 |
46 |
||
| Kitchener | 40 |
2 |
3.6 |
||
| London | 32 |
3 |
8.4 |
||
| Milton | 32 |
4 |
10.6 |
0.2 |
|
| Mississauga | 14 |
6 |
27.3 |
||
| Newmarket | 39 |
2 |
5.2 |
||
| North Bay | 2 |
4 |
39.1 |
||
| Oakville | 34 |
4 |
7.7 |
||
| Oshawa | 41 |
2 |
1.6 |
||
| Ottawa Downtown | 31 |
3 |
10.1 |
||
| Parry Sound | 27 |
5 |
9.3 |
||
| Peterborough | 41 |
2 |
2 |
||
| Port Stanley | 38 |
3 |
1.9 |
||
| Sarnia | 1 |
11 |
45.5 |
0.3 |
|
| Sault Ste. Marie | 15 |
4 |
28.7 |
0.1 |
|
| St. Catharines | 36 |
4 |
8.7 |
||
| Sudbury | 2 |
9 |
45.7 |
0.5 |
|
| Thunder Bay | 7 |
6 |
34.1 |
||
| Tiverton | 42 |
1 |
|||
| Toronto Downtown | 23 |
2 |
25.6 |
||
| Toronto East | 29 |
5 |
14.6 |
||
| Toronto North | 20 |
4 |
24.3 |
0.7 |
|
| Toronto West | 22 |
4 |
20.8 |
0 |
0.23 |
| Windsor Downtown | 9 |
13 |
37.7 |
0.1 |
0.35 |
| Windsor West | 4 |
10 |
39.2 |
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.
