Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 17 |
4 |
2.7 |
||
| Belleville | 24 |
4 |
1.5 |
||
| Brampton | 23 |
3 |
1.5 |
||
| Brantford | 17 |
4 |
3.3 |
||
| Burlington | 24 |
3 |
3.5 |
||
| Chatham | 20 |
3 |
1.2 |
||
| Cornwall | 10 |
11 |
6.8 |
||
| Dorset | 4 |
3 |
|||
| Grand Bend | 23 |
3 |
1.1 |
||
| Guelph | 20 |
3 |
2.3 |
||
| Hamilton Downtown | 26 |
3 |
3 |
0.5 |
0.17 |
| Hamilton Mountain | 28 |
4 |
2.3 |
0.3 |
|
| Hamilton West | 18 |
3 |
8.5 |
||
| Kingston | 24 |
4 |
1.2 |
||
| Kitchener | 22 |
3 |
1.6 |
||
| London | 6 |
6 |
4.9 |
||
| Milton | 23 |
2 |
3.1 |
0 |
|
| Mississauga | 18 |
4 |
8.7 |
||
| Newmarket | 16 |
4 |
2.8 |
||
| North Bay | 6 |
6 |
7 |
||
| Oakville | 22 |
3 |
4.1 |
||
| Oshawa | 21 |
4 |
1.2 |
||
| Ottawa Downtown | 19 |
5 |
2.2 |
||
| Parry Sound | 13 |
4 |
5.3 |
||
| Peterborough | 26 |
3 |
0.3 |
||
| Port Stanley | 19 |
7 |
3.8 |
||
| Sarnia | 31 |
3 |
0.6 |
0.1 |
|
| Sault Ste. Marie | 16 |
3 |
2 |
0 |
|
| St. Catharines | 2 |
7 |
9.9 |
||
| Sudbury | 3 |
10 |
13.9 |
0 |
|
| Thunder Bay | 9 |
9 |
7.8 |
||
| Tiverton | 34 |
3 |
|||
| Toronto Downtown | 19 |
4 |
9.8 |
||
| Toronto East | 18 |
4 |
4.9 |
||
| Toronto North | 18 |
3 |
2.4 |
0 |
|
| Toronto West | 13 |
4 |
10.3 |
0.1 |
0.25 |
| Windsor Downtown | 28 |
4 |
5.7 |
0 |
N/A |
| Windsor West | 25 |
4 |
6.6 |
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.
