Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 23 |
6 |
0.8 |
||
| Belleville | 24 |
6 |
4.2 |
||
| Brampton | 33 |
8 |
1.4 |
||
| Brantford | 29 |
7 |
2.2 |
||
| Burlington | 30 |
11 |
6 |
||
| Chatham | 41 |
10 |
2.4 |
||
| Cornwall | 23 |
4 |
1.9 |
||
| Dorset | 21 |
5 |
|||
| Grand Bend | 29 |
4 |
0.5 |
||
| Guelph | 30 |
8 |
1.6 |
||
| Hamilton Downtown | 31 |
12 |
2.2 |
0.2 |
0.19 |
| Hamilton Mountain | 33 |
9 |
3.4 |
0.3 |
|
| Hamilton West | 28 |
9 |
4.2 |
||
| Kingston | 31 |
4 |
1 |
||
| Kitchener | 31 |
8 |
2.4 |
||
| London | 28 |
8 |
2.1 |
||
| Milton | 31 |
10 |
4.7 |
0.1 |
|
| Mississauga | 32 |
8 |
2.7 |
||
| Newmarket | 27 |
8 |
1 |
||
| North Bay | 18 |
4 |
1.1 |
||
| Oakville | 31 |
10 |
2.3 |
||
| Oshawa | 28 |
7 |
1.3 |
||
| Ottawa Downtown | 24 |
4 |
1.9 |
||
| Parry Sound | 28 |
6 |
0.7 |
||
| Peterborough | 28 |
5 |
1 |
||
| Port Stanley | 51 |
13 |
0.7 |
||
| Sarnia | 32 |
6 |
1.8 |
0 |
|
| Sault Ste. Marie | 29 |
5 |
1 |
0 |
|
| St. Catharines | 31 |
7 |
2.6 |
||
| Sudbury | 25 |
5 |
2.9 |
0.3 |
|
| Thunder Bay | 26 |
5 |
1.1 |
||
| Tiverton | 29 |
5 |
|||
| Toronto Downtown | 27 |
15 |
8.1 |
||
| Toronto East | 23 |
10 |
5.8 |
||
| Toronto North | 25 |
7 |
2.8 |
0 |
|
| Toronto West | 17 |
8 |
13.3 |
0.1 |
0.24 |
| Windsor Downtown | 48 |
12 |
5 |
0 |
0.23 |
| Windsor West | 41 |
14 |
5.1 |
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.
