Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 35 |
4 |
3.9 |
||
| Belleville | 33 |
4 |
9.6 |
||
| Brampton | 28 |
4 |
14.7 |
||
| Brantford | 37 |
3 |
5.9 |
||
| Burlington | 42 |
3 |
4 |
||
| Chatham | 34 |
4 |
3.3 |
||
| Cornwall | 35 |
2 |
1 |
||
| Dorset | 41 |
3 |
|||
| Grand Bend | 38 |
4 |
1.5 |
||
| Guelph | 39 |
2 |
2.5 |
||
| Hamilton Downtown | 31 |
4 |
9.9 |
13.6 |
0 |
| Hamilton Mountain | 36 |
3 |
7.5 |
11.3 |
|
| Hamilton West | 40 |
3 |
4.2 |
||
| Kingston | 43 |
3 |
1.9 |
||
| Kitchener | 40 |
2 |
2.8 |
||
| London | 40 |
4 |
2.5 |
||
| Milton | 44 |
2 |
0.4 |
0.2 |
|
| Mississauga | 38 |
3 |
2.8 |
||
| Newmarket | 36 |
4 |
6.6 |
||
| North Bay | 42 |
3 |
0 |
||
| Oakville | 39 |
3 |
5.5 |
||
| Oshawa | 37 |
3 |
1.9 |
||
| Ottawa Downtown | 33 |
3 |
2.9 |
||
| Parry Sound | 37 |
3 |
3.6 |
||
| Peterborough | 38 |
4 |
3.7 |
||
| Port Stanley | 37 |
3 |
3.6 |
||
| Sarnia | 33 |
6 |
4.5 |
0 |
|
| Sault Ste. Marie | 37 |
2 |
1.5 |
0 |
|
| St. Catharines | 37 |
4 |
3.2 |
||
| Sudbury | 39 |
3 |
2.7 |
0 |
|
| Thunder Bay | 11 |
5 |
6.2 |
||
| Tiverton | 41 |
3 |
|||
| Toronto Downtown | 34 |
4 |
11.6 |
||
| Toronto East | 40 |
2 |
3.6 |
||
| Toronto North | 31 |
14 |
5.8 |
0 |
|
| Toronto West | 35 |
3 |
8.2 |
0 |
0.16 |
| Windsor Downtown | 30 |
10 |
8.9 |
0 |
0.2 |
| Windsor West | 23 |
11 |
11.2 |
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.
