Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 14 |
3 |
1 |
||
| Belleville | 25 |
4 |
7.5 |
||
| Brampton | 19 |
4 |
2.3 |
||
| Brantford | 21 |
5 |
2.1 |
||
| Burlington | 23 |
4 |
4.3 |
||
| Chatham | 27 |
4 |
1.4 |
||
| Cornwall | 37 |
4 |
2.2 |
||
| Dorset | 16 |
1 |
|||
| Grand Bend | 21 |
3 |
0.1 |
||
| Guelph | 19 |
4 |
0.4 |
||
| Hamilton Downtown | 19 |
4 |
7.7 |
0.4 |
0.19 |
| Hamilton Mountain | 20 |
4 |
4 |
0 |
|
| Hamilton West | 16 |
4 |
6.7 |
||
| Kingston | 34 |
4 |
2 |
||
| Kitchener | 21 |
4 |
1 |
||
| London | 20 |
5 |
3.3 |
||
| Milton | 17 |
5 |
5 |
0.2 |
|
| Mississauga | 17 |
4 |
5.6 |
||
| Newmarket | 16 |
3 |
0.8 |
||
| North Bay | 18 |
1 |
1.7 |
||
| Oakville | 17 |
4 |
4.8 |
||
| Oshawa | 14 |
4 |
1.1 |
||
| Ottawa Downtown | 19 |
4 |
4.1 |
||
| Parry Sound | 18 |
3 |
0.7 |
||
| Peterborough | 15 |
3 |
3.3 |
||
| Port Stanley | 24 |
4 |
1.5 |
||
| Sarnia | 20 |
3 |
0.9 |
0 |
|
| Sault Ste. Marie | 23 |
2 |
0.7 |
0 |
|
| St. Catharines | 23 |
3 |
2.9 |
||
| Sudbury | 22 |
3 |
1.8 |
0 |
|
| Thunder Bay | 20 |
3 |
1 |
||
| Tiverton | 19 |
2 |
|||
| Toronto Downtown | 18 |
18 |
5.5 |
||
| Toronto East | 15 |
4 |
4.7 |
||
| Toronto North | 16 |
4 |
3 |
0.2 |
|
| Toronto West | 13 |
4 |
7.8 |
0 |
0.19 |
| Windsor Downtown | 25 |
7 |
12.7 |
0 |
0.22 |
| Windsor West | 25 |
8 |
10.1 |
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.
