Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 29 |
14 |
2.5 |
||
| Belleville | 36 |
1 |
0.8 |
||
| Brampton | N/A |
N/A |
N/A |
||
| Brantford | 32 |
4 |
2.3 |
||
| Burlington | 20 |
4 |
12.4 |
||
| Chatham | 32 |
3 |
1.4 |
||
| Cornwall | 37 |
1 |
0.6 |
||
| Dorset | 30 |
1 |
|||
| Grand Bend | 33 |
2 |
0.7 |
||
| Guelph | 35 |
3 |
1.6 |
||
| Hamilton Downtown | 28 |
3 |
5.1 |
0.7 |
0.14 |
| Hamilton Mountain | 33 |
3 |
2.6 |
0.4 |
|
| Hamilton West | 31 |
3 |
4.5 |
||
| Kingston | 31 |
1 |
0.9 |
||
| Kitchener | 34 |
2 |
2.1 |
||
| London | 33 |
3 |
0.9 |
||
| Milton | 36 |
2 |
0.3 |
N/A |
|
| Mississauga | 33 |
3 |
3.2 |
||
| Newmarket | 34 |
2 |
1 |
||
| North Bay | 29 |
2 |
0.6 |
||
| Oakville | 32 |
3 |
1.9 |
||
| Oshawa | 34 |
2 |
1.3 |
||
| Ottawa Downtown | 34 |
1 |
1.7 |
||
| Parry Sound | 28 |
2 |
0.8 |
||
| Peterborough | 30 |
2 |
1.8 |
||
| Port Stanley | 31 |
3 |
3.9 |
||
| Sarnia | 33 |
1 |
1.1 |
0 |
|
| Sault Ste. Marie | N/A |
N/A |
N/A |
N/A |
|
| St. Catharines | 32 |
3 |
4.2 |
||
| Sudbury | 28 |
2 |
1.8 |
0.2 |
|
| Thunder Bay | 36 |
2 |
1 |
||
| Tiverton | 27 |
1 |
|||
| Toronto Downtown | 15 |
7 |
21.1 |
||
| Toronto East | 24 |
5 |
8.9 |
||
| Toronto North | 32 |
3 |
4.6 |
0.1 |
|
| Toronto West | 26 |
4 |
11.6 |
0.3 |
0.16 |
| Windsor Downtown | 30 |
9 |
5 |
0.2 |
0.17 |
| Windsor West | 28 |
9 |
4.6 |
0.1 |
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.
