Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 10 |
8 |
2.1 |
||
| Belleville | 14 |
7 |
6.7 |
||
| Brampton | 18 |
8 |
3.1 |
||
| Brantford | 8 |
9 |
3.2 |
||
| Burlington | 9 |
8 |
12.9 |
||
| Chatham | 46 |
15 |
3.7 |
||
| Cornwall | 16 |
6 |
2.3 |
||
| Dorset | 2 |
6 |
|||
| Grand Bend | 15 |
10 |
3.2 |
||
| Guelph | 13 |
8 |
1.8 |
||
| Hamilton Downtown | 18 |
10 |
3.3 |
0.9 |
0.18 |
| Hamilton Mountain | 17 |
10 |
3.8 |
0.8 |
|
| Hamilton West | 12 |
9 |
8.2 |
||
| Kingston | 20 |
5 |
2.4 |
||
| Kitchener | 12 |
10 |
3.6 |
||
| London | 5 |
12 |
6.4 |
||
| Milton | 17 |
8 |
3.8 |
0.3 |
|
| Mississauga | 12 |
8 |
8.5 |
||
| Newmarket | 20 |
9 |
2.6 |
||
| North Bay | 7 |
6 |
3.8 |
||
| Oakville | 15 |
8 |
6 |
||
| Oshawa | 6 |
7 |
4.5 |
||
| Ottawa Downtown | 14 |
5 |
3.4 |
||
| Parry Sound | 2 |
8 |
7.1 |
||
| Peterborough | 18 |
7 |
2.7 |
||
| Port Stanley | 27 |
18 |
2.4 |
||
| Sarnia | 29 |
17 |
10.4 |
0.2 |
|
| Sault Ste. Marie | 18 |
7 |
0.9 |
N/A |
|
| St. Catharines | 27 |
8 |
1.6 |
||
| Sudbury | 17 |
12 |
5.4 |
0.4 |
|
| Thunder Bay | 6 |
7 |
3.2 |
||
| Tiverton | 15 |
9 |
|||
| Toronto Downtown | 17 |
7 |
9 |
||
| Toronto East | 14 |
6 |
5.9 |
||
| Toronto North | 22 |
9 |
3.9 |
0.5 |
|
| Toronto West | 16 |
10 |
8.6 |
0.5 |
0.19 |
| Windsor Downtown | 41 |
19 |
5.8 |
0 |
0.24 |
| Windsor West | 41 |
24 |
2.6 |
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.
