Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 39 |
5 |
2.7 |
||
| Belleville | 39 |
4 |
3.6 |
||
| Brampton | 44 |
5 |
2.7 |
||
| Brantford | N/A |
N/A |
N/A |
||
| Burlington | 30 |
13 |
14.8 |
||
| Chatham | 51 |
6 |
1.5 |
||
| Cornwall | 21 |
6 |
3 |
||
| Dorset | 36 |
4 |
|||
| Grand Bend | 42 |
8 |
2.5 |
||
| Guelph | 45 |
4 |
1.6 |
||
| Hamilton Downtown | 40 |
7 |
10 |
6.6 |
0.2 |
| Hamilton Mountain | 45 |
7 |
4.9 |
2.3 |
|
| Hamilton West | 41 |
7 |
7.7 |
||
| Kingston | 33 |
4 |
2 |
||
| Kitchener | 48 |
6 |
2.4 |
||
| London | 50 |
6 |
1.7 |
||
| Milton | 47 |
5 |
3.2 |
0.2 |
|
| Mississauga | 42 |
5 |
5.9 |
||
| Newmarket | 45 |
6 |
1.8 |
||
| North Bay | 33 |
3 |
1.3 |
||
| Oakville | 39 |
6 |
6.5 |
||
| Oshawa | 44 |
5 |
1.4 |
||
| Ottawa Downtown | 34 |
3 |
1.5 |
||
| Parry Sound | 36 |
4 |
1 |
||
| Peterborough | 41 |
4 |
1.8 |
||
| Port Stanley | 48 |
8 |
3.5 |
||
| Sarnia | 52 |
6 |
1.8 |
0.4 |
|
| Sault Ste. Marie | 33 |
4 |
1.4 |
0 |
|
| St. Catharines | 37 |
6 |
6.6 |
||
| Sudbury | 26 |
5 |
20.2 |
0.3 |
|
| Thunder Bay | 24 |
7 |
3.3 |
||
| Tiverton | 42 |
4 |
|||
| Toronto Downtown | 27 |
11 |
21.4 |
||
| Toronto East | 38 |
6 |
5.5 |
||
| Toronto North | 43 |
6 |
2.6 |
0.1 |
|
| Toronto West | 37 |
6 |
11.5 |
0.2 |
0.19 |
| Windsor Downtown | 54 |
8 |
4.4 |
0.4 |
0.23 |
| Windsor West | 53 |
7 |
5.3 |
0.3 |
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.
