Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 42 |
6 |
1.2 |
||
| Belleville | 50 |
9 |
2.3 |
||
| Brampton | 47 |
6 |
1.4 |
||
| Brantford | 50 |
5 |
1.2 |
||
| Burlington | N/A |
N/A |
N/A |
||
| Chatham | 47 |
7 |
0.3 |
||
| Cornwall | 35 |
9 |
1.1 |
||
| Dorset | 44 |
5 |
|||
| Grand Bend | 56 |
5 |
1.7 |
||
| Guelph | 46 |
6 |
1.7 |
||
| Hamilton Downtown | 43 |
6 |
3.9 |
0.4 |
0.19 |
| Hamilton Mountain | 51 |
5 |
1.7 |
0.1 |
|
| Hamilton West | 44 |
6 |
6.8 |
||
| Kingston | 49 |
8 |
1.7 |
||
| Kitchener | 47 |
5 |
1.5 |
||
| London | 57 |
6 |
1.5 |
||
| Milton | 49 |
7 |
1.4 |
0.2 |
|
| Mississauga | 48 |
6 |
1.4 |
||
| Newmarket | 39 |
10 |
1.8 |
||
| North Bay | 42 |
11 |
0 |
||
| Oakville | 45 |
6 |
1.4 |
||
| Oshawa | 36 |
6 |
3.3 |
||
| Ottawa Downtown | 29 |
10 |
1.6 |
||
| Parry Sound | 44 |
8 |
1.5 |
||
| Peterborough | 47 |
5 |
0.7 |
||
| Port Stanley | 71 |
10 |
1.9 |
||
| Sarnia | 44 |
11 |
3.4 |
0 |
|
| Sault Ste. Marie | 118 |
13 |
1.7 |
0 |
|
| St. Catharines | 55 |
6 |
1.9 |
||
| Sudbury | 36 |
8 |
2.1 |
0.8 |
|
| Thunder Bay | 19 |
6 |
2.3 |
||
| Tiverton | 47 |
6 |
|||
| Toronto Downtown | 44 |
8 |
17 |
||
| Toronto East | 42 |
7 |
5.1 |
||
| Toronto North | 40 |
8 |
3.8 |
0 |
|
| Toronto West | 40 |
7 |
9.5 |
0 |
0.19 |
| Windsor Downtown | 42 |
N/A |
4 |
0 |
0.14 |
| Windsor West | 38 |
4 |
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.
