Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 34 |
4 |
5.6 |
||
| Belleville | 38 |
4 |
5.3 |
||
| Brampton | 37 |
4 |
2.5 |
||
| Brantford | 38 |
7 |
2.2 |
||
| Burlington | 22 |
6 |
20.8 |
||
| Chatham | 35 |
3 |
4.2 |
||
| Cornwall | 36 |
5 |
3.2 |
||
| Dorset | 37 |
5 |
|||
| Grand Bend | 39 |
4 |
1.5 |
||
| Guelph | 36 |
4 |
2.8 |
||
| Hamilton Downtown | 27 |
6 |
10.4 |
1.2 |
0.19 |
| Hamilton Mountain | 33 |
5 |
6.4 |
1.6 |
|
| Hamilton West | 27 |
6 |
12.6 |
||
| Kingston | 40 |
4 |
1.7 |
||
| Kitchener | 34 |
4 |
3.6 |
||
| London | 32 |
4 |
8.8 |
||
| Milton | 33 |
5 |
7.7 |
0.3 |
|
| Mississauga | 31 |
5 |
10 |
||
| Newmarket | 36 |
4 |
2.8 |
||
| North Bay | 13 |
15 |
20.3 |
||
| Oakville | 31 |
5 |
8.8 |
||
| Oshawa | 36 |
4 |
1 |
||
| Ottawa Downtown | 38 |
5 |
5.5 |
||
| Parry Sound | 40 |
3 |
0.6 |
||
| Peterborough | 37 |
4 |
0.8 |
||
| Port Stanley | 39 |
3 |
1.4 |
||
| Sarnia | 43 |
3 |
1.8 |
0 |
|
| Sault Ste. Marie | 43 |
3 |
2.6 |
0 |
|
| St. Catharines | 35 |
6 |
7.6 |
||
| Sudbury | 39 |
4 |
5.2 |
0.1 |
|
| Thunder Bay | 36 |
5 |
4.4 |
||
| Tiverton | 32 |
3 |
|||
| Toronto Downtown | 25 |
6 |
35.4 |
||
| Toronto East | 32 |
5 |
7.2 |
||
| Toronto North | 34 |
6 |
4.1 |
0 |
|
| Toronto West | 30 |
4 |
10 |
0 |
0.2 |
| Windsor Downtown | N/A |
N/A |
N/A |
N/A |
N/A |
| Windsor West | 33 |
3 |
5.2 |
0.4 |
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.
