Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 35 |
5 |
3.4 |
||
| Belleville | 40 |
4 |
1.3 |
||
| Brampton | 35 |
5 |
5.4 |
||
| Brantford | 30 |
3 |
0 |
||
| Burlington | 35 |
4 |
7 |
||
| Chatham | 39 |
2 |
2.4 |
||
| Cornwall | 40 |
3 |
1.4 |
||
| Dorset | 36 |
3 |
|||
| Grand Bend | 37 |
4 |
2.2 |
||
| Guelph | 36 |
3 |
4.9 |
||
| Hamilton Downtown | 33 |
4 |
5.7 |
0.7 |
0.17 |
| Hamilton Mountain | 39 |
3 |
1.7 |
0.4 |
|
| Hamilton West | 35 |
3 |
3.3 |
||
| Kingston | 39 |
3 |
2.4 |
||
| Kitchener | 37 |
3 |
2 |
||
| London | 37 |
3 |
3.5 |
||
| Milton | 38 |
5 |
1.5 |
0.3 |
|
| Mississauga | 34 |
4 |
8.5 |
||
| Newmarket | 36 |
4 |
7.1 |
||
| North Bay | 31 |
5 |
8.5 |
||
| Oakville | 34 |
5 |
7.1 |
||
| Oshawa | 35 |
3 |
5.4 |
||
| Ottawa Downtown | 40 |
4 |
3.4 |
||
| Parry Sound | 42 |
2 |
0.6 |
||
| Peterborough | 40 |
3 |
2.2 |
||
| Port Stanley | 42 |
2 |
1.8 |
||
| Sarnia | 35 |
4 |
7.1 |
7 |
|
| Sault Ste. Marie | 20 |
4 |
19.2 |
0.2 |
|
| St. Catharines | 37 |
4 |
2.7 |
||
| Sudbury | 37 |
4 |
4.9 |
0.2 |
|
| Thunder Bay | 40 |
3 |
1.9 |
||
| Tiverton | 39 |
3 |
|||
| Toronto Downtown | 18 |
5 |
33.4 |
||
| Toronto East | 32 |
5 |
7.8 |
||
| Toronto North | 27 |
6 |
14.2 |
0.2 |
|
| Toronto West | 31 |
4 |
10.6 |
0.4 |
0.17 |
| Windsor Downtown | 38 |
5 |
3.5 |
0 |
0.17 |
| Windsor West | 36 |
5 |
3.6 |
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.
