Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 2 |
18 |
18.9 |
||
| Belleville | 24 |
5 |
2.4 |
||
| Brampton | 25 |
6 |
11.3 |
||
| Brantford | 14 |
6 |
2.4 |
||
| Burlington | 13 |
6 |
24.1 |
||
| Chatham | 28 |
6 |
4.8 |
||
| Cornwall | 17 |
10 |
1.3 |
||
| Dorset | 3 |
7 |
|||
| Grand Bend | 16 |
4 |
1 |
||
| Guelph | 21 |
5 |
4.9 |
||
| Hamilton Downtown | 25 |
5 |
7.9 |
0.3 |
0.29 |
| Hamilton Mountain | 37 |
4 |
3.8 |
0.2 |
|
| Hamilton West | 20 |
5 |
11.4 |
||
| Kingston | 23 |
6 |
4.7 |
||
| Kitchener | 19 |
5 |
4.9 |
||
| London | 22 |
6 |
5.2 |
||
| Milton | 33 |
4 |
4.9 |
0 |
|
| Mississauga | 8 |
6 |
9.5 |
||
| Newmarket | 33 |
10 |
8.1 |
||
| North Bay | 13 |
6 |
9.2 |
||
| Oakville | 26 |
5 |
7.8 |
||
| Oshawa | 4 |
6 |
4.3 |
||
| Ottawa Downtown | 5 |
12 |
11.3 |
||
| Parry Sound | 14 |
7 |
5.1 |
||
| Peterborough | 24 |
6 |
4.1 |
||
| Port Stanley | 29 |
4 |
0.9 |
||
| Sarnia | 30 |
4 |
3.4 |
0.1 |
|
| Sault Ste. Marie | 30 |
4 |
3 |
0 |
|
| St. Catharines | 9 |
7 |
16.9 |
||
| Sudbury | 26 |
4 |
1.2 |
0 |
|
| Thunder Bay | 20 |
5 |
5.3 |
||
| Tiverton | 13 |
3 |
|||
| Toronto Downtown | 38 |
8 |
10.2 |
||
| Toronto East | 23 |
17 |
16.7 |
||
| Toronto North | 20 |
11 |
10.3 |
0 |
|
| Toronto West | 35 |
6 |
8.5 |
0 |
0.26 |
| Windsor Downtown | 31 |
4 |
5.8 |
0 |
N/A |
| Windsor West | 31 |
4 |
4.5 |
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.
