Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 19 |
3 |
0.8 |
||
| Belleville | 22 |
2 |
1.3 |
||
| Brampton | 23 |
3 |
2.8 |
||
| Brantford | 16 |
5 |
3.8 |
||
| Burlington | 20 |
3 |
2.7 |
||
| Chatham | 19 |
4 |
2 |
||
| Cornwall | 21 |
2 |
1.1 |
||
| Dorset | 20 |
1 |
|||
| Grand Bend | 21 |
3 |
0.9 |
||
| Guelph | 21 |
3 |
0.8 |
||
| Hamilton Downtown | 16 |
4 |
4.8 |
4.6 |
0.2 |
| Hamilton Mountain | 12 |
7 |
8.7 |
7.3 |
|
| Hamilton West | 17 |
4 |
5 |
||
| Kingston | 20 |
2 |
0.7 |
||
| Kitchener | 19 |
3 |
1.5 |
||
| London | 22 |
8 |
3 |
||
| Milton | 21 |
3 |
2.9 |
0.3 |
|
| Mississauga | 20 |
4 |
6.5 |
||
| Newmarket | 22 |
3 |
1 |
||
| North Bay | 19 |
2 |
0 |
||
| Oakville | 14 |
4 |
8.3 |
||
| Oshawa | 21 |
3 |
0.7 |
||
| Ottawa Downtown | 18 |
2 |
1.1 |
||
| Parry Sound | 18 |
8 |
0.7 |
||
| Peterborough | 20 |
2 |
0.7 |
||
| Port Stanley | N/A |
3 |
N/A |
||
| Sarnia | 20 |
3 |
1.6 |
0.1 |
|
| Sault Ste. Marie | 13 |
2 |
0.5 |
0.2 |
|
| St. Catharines | 18 |
3 |
1.5 |
||
| Sudbury | 16 |
2 |
1.7 |
0 |
|
| Thunder Bay | 12 |
2 |
1.1 |
||
| Tiverton | 19 |
2 |
|||
| Toronto Downtown | 19 |
5 |
9.1 |
||
| Toronto East | 17 |
5 |
4.7 |
||
| Toronto North | 22 |
4 |
2.1 |
0.3 |
|
| Toronto West | 16 |
4 |
5.9 |
0.1 |
0.24 |
| Windsor Downtown | 21 |
5 |
3 |
0 |
0.19 |
| Windsor West | 21 |
6 |
2.1 |
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.
