Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 21 |
4 |
1.3 |
||
| Belleville | 19 |
4 |
3.3 |
||
| Brampton | 26 |
3 |
2 |
||
| Brantford | 12 |
6 |
2.1 |
||
| Burlington | 24 |
4 |
4.6 |
||
| Chatham | 13 |
7 |
0.9 |
||
| Cornwall | 15 |
4 |
1.5 |
||
| Dorset | 2 |
5 |
|||
| Grand Bend | 15 |
5 |
2 |
||
| Guelph | 14 |
5 |
2.3 |
||
| Hamilton Downtown | 22 |
4 |
3.8 |
0.3 |
0.18 |
| Hamilton Mountain | 27 |
4 |
2.8 |
0.2 |
|
| Hamilton West | 21 |
4 |
5.9 |
||
| Kingston | 15 |
4 |
3.6 |
||
| Kitchener | 14 |
5 |
4 |
||
| London | 8 |
7 |
5 |
||
| Milton | 19 |
4 |
5.5 |
0 |
|
| Mississauga | 25 |
3 |
6.5 |
||
| Newmarket | 23 |
4 |
2.3 |
||
| North Bay | 13 |
5 |
0.9 |
||
| Oakville | 25 |
4 |
4.6 |
||
| Oshawa | 20 |
4 |
1.2 |
||
| Ottawa Downtown | 13 |
3 |
1.2 |
||
| Parry Sound | 15 |
4 |
3.3 |
||
| Peterborough | 18 |
3 |
1 |
||
| Port Stanley | 21 |
8 |
1.4 |
||
| Sarnia | 23 |
6 |
1.4 |
0 |
|
| Sault Ste. Marie | 12 |
5 |
2.1 |
0 |
|
| St. Catharines | 22 |
4 |
5.2 |
||
| Sudbury | 13 |
10 |
7.1 |
0 |
|
| Thunder Bay | 11 |
7 |
6.8 |
||
| Tiverton | 27 |
4 |
|||
| Toronto Downtown | 23 |
5 |
6.7 |
||
| Toronto East | 20 |
4 |
6.1 |
||
| Toronto North | 24 |
3 |
3.3 |
0 |
|
| Toronto West | 17 |
3 |
11 |
0 |
0.24 |
| Windsor Downtown | 27 |
10 |
8.4 |
0 |
N/A |
| Windsor West | 12 |
10 |
12.5 |
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.
