Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 29 |
4 |
8.5 |
||
| Belleville | 31 |
3 |
2.3 |
||
| Brampton | 34 |
3 |
2.8 |
||
| Brantford | 28 |
6 |
4.7 |
||
| Burlington | 29 |
6 |
7.7 |
||
| Chatham | 35 |
4 |
4.7 |
||
| Cornwall | 27 |
4 |
3.4 |
||
| Dorset | 32 |
2 |
|||
| Grand Bend | N/A |
N/A |
N/A |
||
| Guelph | 30 |
6 |
5.7 |
||
| Hamilton Downtown | 28 |
5 |
7.5 |
0.2 |
0.16 |
| Hamilton Mountain | 31 |
4 |
3.7 |
0.3 |
|
| Hamilton West | 30 |
4 |
5.8 |
||
| Kingston | 33 |
2 |
3.2 |
||
| Kitchener | 27 |
8 |
5.7 |
||
| London | 28 |
7 |
4.9 |
||
| Milton | 30 |
4 |
7.2 |
0.2 |
|
| Mississauga | 32 |
3 |
4.3 |
||
| Newmarket | 31 |
5 |
5.1 |
||
| North Bay | 28 |
2 |
4.1 |
||
| Oakville | 32 |
3 |
3.1 |
||
| Oshawa | 23 |
6 |
13.9 |
||
| Ottawa Downtown | N/A |
N/A |
N/A |
||
| Parry Sound | 34 |
1 |
2.2 |
||
| Peterborough | 27 |
3 |
7.1 |
||
| Port Stanley | 32 |
5 |
2.4 |
||
| Sarnia | N/A |
N/A |
N/A |
N/A |
|
| Sault Ste. Marie | 31 |
4 |
5.6 |
0.4 |
|
| St. Catharines | 32 |
4 |
4.7 |
||
| Sudbury | 25 |
2 |
8 |
0.3 |
|
| Thunder Bay | 31 |
6 |
3.8 |
||
| Tiverton | 33 |
4 |
|||
| Toronto Downtown | 20 |
7 |
18.9 |
||
| Toronto East | 26 |
5 |
11.3 |
||
| Toronto North | 21 |
7 |
15.5 |
0.4 |
|
| Toronto West | 14 |
5 |
22.8 |
0.2 |
0.18 |
| Windsor Downtown | 27 |
6 |
6.5 |
0.3 |
0.15 |
| Windsor West | 27 |
5 |
6.1 |
0.2 |
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.
