Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 35 |
7 |
3.4 |
||
| Belleville | 36 |
9 |
3.9 |
||
| Brampton | 26 |
12 |
7.8 |
||
| Brantford | 22 |
18 |
4.5 |
||
| Burlington | 26 |
13 |
4.2 |
||
| Chatham | 22 |
12 |
6.3 |
||
| Cornwall | 18 |
11 |
15.9 |
||
| Dorset | 42 |
4 |
|||
| Grand Bend | 27 |
11 |
4.2 |
||
| Guelph | 24 |
10 |
7.8 |
||
| Hamilton Downtown | 18 |
15 |
8.3 |
0.6 |
0.29 |
| Hamilton Mountain | 15 |
12 |
11 |
1 |
|
| Hamilton West | 24 |
14 |
6.1 |
||
| Kingston | 30 |
7 |
8.2 |
||
| Kitchener | 26 |
8 |
5 |
||
| London | 25 |
13 |
6.5 |
||
| Milton | 27 |
11 |
5 |
0.2 |
|
| Mississauga | 29 |
11 |
4.6 |
||
| Newmarket | 27 |
12 |
4.7 |
||
| North Bay | 40 |
3 |
1.2 |
||
| Oakville | 29 |
11 |
3.6 |
||
| Oshawa | 30 |
14 |
4.3 |
||
| Ottawa Downtown | 29 |
7 |
9.8 |
||
| Parry Sound | 38 |
4 |
2.6 |
||
| Peterborough | 37 |
9 |
2.1 |
||
| Port Stanley | 24 |
10 |
5 |
||
| Sarnia | 24 |
15 |
5.8 |
0 |
|
| Sault Ste. Marie | 41 |
3 |
1.2 |
0.1 |
|
| St. Catharines | 15 |
15 |
6.1 |
||
| Sudbury | 36 |
3 |
4.7 |
0.1 |
|
| Thunder Bay | 28 |
3 |
7.1 |
||
| Tiverton | 26 |
9 |
|||
| Toronto Downtown | 22 |
18 |
22.5 |
||
| Toronto East | 31 |
11 |
4.6 |
||
| Toronto North | 28 |
14 |
5 |
0.7 |
|
| Toronto West | 28 |
12 |
5.7 |
0 |
0.24 |
| Windsor Downtown | 21 |
13 |
9.2 |
0 |
0.23 |
| Windsor West | 23 |
13 |
6.3 |
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.
