Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 26 |
3 |
7.8 |
||
| Belleville | 32 |
3 |
3.8 |
||
| Brampton | 26 |
3 |
9.3 |
||
| Brantford | 30 |
3 |
2.2 |
||
| Burlington | 21 |
4 |
15.1 |
||
| Chatham | 37 |
4 |
5.5 |
||
| Cornwall | 33 |
16 |
2.3 |
||
| Dorset | 29 |
3 |
|||
| Grand Bend | 36 |
2 |
1.1 |
||
| Guelph | 27 |
3 |
9.2 |
||
| Hamilton Downtown | 25 |
3 |
9.8 |
0.1 |
0.2 |
| Hamilton Mountain | 28 |
3 |
6.7 |
0 |
|
| Hamilton West | 27 |
3 |
9.4 |
||
| Kingston | 32 |
4 |
4.1 |
||
| Kitchener | 30 |
3 |
5.2 |
||
| London | 31 |
3 |
7.3 |
||
| Milton | 24 |
5 |
13.4 |
0.2 |
|
| Mississauga | 26 |
3 |
9.8 |
||
| Newmarket | 30 |
3 |
3.5 |
||
| North Bay | 5 |
8 |
33.5 |
||
| Oakville | 22 |
4 |
15.4 |
||
| Oshawa | 31 |
3 |
3.3 |
||
| Ottawa Downtown | 13 |
45 |
20.3 |
||
| Parry Sound | 21 |
4 |
9.4 |
||
| Peterborough | 32 |
3 |
1.2 |
||
| Port Stanley | 36 |
2 |
2.3 |
||
| Sarnia | 28 |
5 |
9.7 |
0.1 |
|
| Sault Ste. Marie | 26 |
3 |
9.9 |
0.1 |
|
| St. Catharines | 29 |
4 |
5.5 |
||
| Sudbury | 29 |
2 |
2.7 |
0.1 |
|
| Thunder Bay | 4 |
10 |
37.4 |
||
| Tiverton | 33 |
3 |
|||
| Toronto Downtown | 19 |
4 |
23.4 |
||
| Toronto East | 25 |
3 |
9.9 |
||
| Toronto North | 25 |
3 |
9.2 |
0.7 |
|
| Toronto West | 16 |
4 |
15.1 |
0.1 |
1.13 |
| Windsor Downtown | 19 |
8 |
22 |
0.1 |
0.28 |
| Windsor West | 8 |
7 |
33.5 |
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.
