Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 37 |
3 |
0.5 |
||
| Belleville | 42 |
2 |
1.5 |
||
| Brampton | 39 |
3 |
2.6 |
||
| Brantford | 37 |
5 |
3 |
||
| Burlington | 37 |
3 |
2.1 |
||
| Chatham | 41 |
3 |
3.2 |
||
| Cornwall | 42 |
3 |
0.6 |
||
| Dorset | 42 |
2 |
|||
| Grand Bend | 40 |
5 |
2.1 |
||
| Guelph | 40 |
3 |
1.6 |
||
| Hamilton Downtown | 28 |
5 |
9.3 |
18.7 |
0.15 |
| Hamilton Mountain | 28 |
6 |
9.1 |
13.2 |
|
| Hamilton West | 34 |
4 |
4.4 |
||
| Kingston | 38 |
2 |
1 |
||
| Kitchener | 40 |
3 |
1.6 |
||
| London | 42 |
4 |
1.2 |
||
| Milton | 42 |
2 |
0 |
0.3 |
|
| Mississauga | 37 |
2 |
1.6 |
||
| Newmarket | 40 |
3 |
1.8 |
||
| North Bay | 39 |
2 |
0.6 |
||
| Oakville | 33 |
3 |
5.1 |
||
| Oshawa | 39 |
3 |
1.3 |
||
| Ottawa Downtown | 40 |
3 |
1.8 |
||
| Parry Sound | 40 |
3 |
1 |
||
| Peterborough | 38 |
2 |
1 |
||
| Port Stanley | 42 |
3 |
2.4 |
||
| Sarnia | 45 |
5 |
3.5 |
0 |
|
| Sault Ste. Marie | 39 |
2 |
0.7 |
0.1 |
|
| St. Catharines | 40 |
4 |
1.9 |
||
| Sudbury | 37 |
3 |
1.2 |
0 |
|
| Thunder Bay | 35 |
3 |
1.9 |
||
| Tiverton | 39 |
3 |
|||
| Toronto Downtown | N/A |
6 |
N/A |
||
| Toronto East | 36 |
2 |
0.8 |
||
| Toronto North | 37 |
3 |
2 |
0 |
|
| Toronto West | 39 |
3 |
1.5 |
0 |
0.08 |
| Windsor Downtown | 41 |
6 |
4.2 |
0.2 |
0.11 |
| Windsor West | 40 |
4 |
2.8 |
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.
