Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 20 |
4 |
6 |
||
| Belleville | N/A |
N/A |
N/A |
||
| Brampton | 19 |
5 |
7.1 |
||
| Brantford | 20 |
6 |
5.7 |
||
| Burlington | 22 |
4 |
6.8 |
||
| Chatham | 30 |
2 |
3.3 |
||
| Cornwall | 29 |
4 |
2.7 |
||
| Dorset | 27 |
3 |
|||
| Grand Bend | 36 |
2 |
1.9 |
||
| Guelph | 19 |
5 |
5.5 |
||
| Hamilton Downtown | 15 |
4 |
10.7 |
1.6 |
0.23 |
| Hamilton Mountain | 10 |
7 |
13.3 |
3.5 |
|
| Hamilton West | 14 |
5 |
13.6 |
||
| Kingston | 24 |
4 |
4.3 |
||
| Kitchener | 17 |
6 |
7.8 |
||
| London | 30 |
5 |
2.6 |
||
| Milton | 22 |
4 |
3.8 |
0.2 |
|
| Mississauga | 24 |
4 |
3.1 |
||
| Newmarket | 24 |
4 |
4.8 |
||
| North Bay | 27 |
1 |
0.7 |
||
| Oakville | 20 |
4 |
7.1 |
||
| Oshawa | 24 |
4 |
2 |
||
| Ottawa Downtown | 31 |
5 |
3.5 |
||
| Parry Sound | 26 |
2 |
1 |
||
| Peterborough | 20 |
4 |
2.8 |
||
| Port Stanley | 36 |
5 |
2.5 |
||
| Sarnia | 27 |
3 |
2.9 |
0.1 |
|
| Sault Ste. Marie | 26 |
2 |
5.3 |
0 |
|
| St. Catharines | 23 |
4 |
3.6 |
||
| Sudbury | 24 |
1 |
4.8 |
0 |
|
| Thunder Bay | 36 |
2 |
3.7 |
||
| Tiverton | 30 |
3 |
|||
| Toronto Downtown | 9 |
4 |
25.2 |
||
| Toronto East | 22 |
4 |
5.1 |
||
| Toronto North | 20 |
6 |
6.6 |
0 |
|
| Toronto West | 4 |
6 |
31 |
0 |
0.33 |
| Windsor Downtown | 23 |
3 |
3.9 |
0 |
0.19 |
| Windsor West | 21 |
3 |
4 |
0.3 |
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.
