Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 25 |
14 |
4.4 |
||
| Belleville | 27 |
11 |
4.6 |
||
| Brampton | 25 |
10 |
9.1 |
||
| Brantford | 23 |
9 |
4 |
||
| Burlington | 30 |
8 |
2.7 |
||
| Chatham | 15 |
8 |
6.1 |
||
| Cornwall | 28 |
9 |
7.2 |
||
| Dorset | 32 |
5 |
|||
| Grand Bend | 21 |
7 |
3.1 |
||
| Guelph | 24 |
9 |
5.5 |
||
| Hamilton Downtown | 20 |
11 |
11.8 |
0.1 |
0.21 |
| Hamilton Mountain | 23 |
10 |
7.6 |
0.1 |
|
| Hamilton West | 15 |
12 |
18.1 |
||
| Kingston | 25 |
8 |
6 |
||
| Kitchener | 21 |
9 |
7.6 |
||
| London | 23 |
8 |
3.2 |
||
| Milton | 26 |
11 |
6.2 |
0.2 |
|
| Mississauga | N/A |
N/A |
N/A |
||
| Newmarket | 26 |
13 |
5 |
||
| North Bay | 28 |
4 |
1 |
||
| Oakville | 27 |
10 |
4.9 |
||
| Oshawa | 29 |
12 |
2.6 |
||
| Ottawa Downtown | 29 |
6 |
5.6 |
||
| Parry Sound | 31 |
7 |
1.8 |
||
| Peterborough | 26 |
13 |
4.7 |
||
| Port Stanley | 25 |
5 |
2 |
||
| Sarnia | 12 |
7 |
7.4 |
0.1 |
|
| Sault Ste. Marie | 24 |
8 |
2.9 |
0 |
|
| St. Catharines | 16 |
10 |
12.4 |
||
| Sudbury | 28 |
8 |
2.9 |
0.1 |
|
| Thunder Bay | 16 |
2 |
1.6 |
||
| Tiverton | 22 |
12 |
|||
| Toronto Downtown | 17 |
8 |
17 |
||
| Toronto East | 27 |
8 |
3.1 |
||
| Toronto North | 26 |
9 |
5 |
0.4 |
|
| Toronto West | 25 |
9 |
6.2 |
0 |
0.17 |
| Windsor Downtown | 7 |
13 |
12.5 |
0 |
N/A |
| Windsor West | 9 |
13 |
7.1 |
N/A |
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.
