Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 15 |
8 |
6 |
||
| Belleville | 35 |
5 |
4.8 |
||
| Brampton | 23 |
5 |
5 |
||
| Brantford | 12 |
6 |
2.8 |
||
| Burlington | 19 |
7 |
14.4 |
||
| Chatham | 14 |
12 |
8 |
||
| Cornwall | 30 |
5 |
0.5 |
||
| Dorset | 7 |
5 |
|||
| Grand Bend | 16 |
5 |
3.6 |
||
| Guelph | 11 |
6 |
6.6 |
||
| Hamilton Downtown | 29 |
6 |
3.7 |
0.2 |
0.13 |
| Hamilton Mountain | 33 |
6 |
3.2 |
0.1 |
|
| Hamilton West | 18 |
6 |
11.5 |
||
| Kingston | 36 |
5 |
2 |
||
| Kitchener | 16 |
5 |
5.7 |
||
| London | 10 |
7 |
6 |
||
| Milton | 21 |
6 |
12.2 |
0.2 |
|
| Mississauga | 11 |
5 |
7.1 |
||
| Newmarket | 22 |
6 |
3.9 |
||
| North Bay | 35 |
4 |
0 |
||
| Oakville | 26 |
5 |
3.4 |
||
| Oshawa | 8 |
7 |
3 |
||
| Ottawa Downtown | 30 |
6 |
2.5 |
||
| Parry Sound | 27 |
4 |
2.2 |
||
| Peterborough | 20 |
5 |
4 |
||
| Port Stanley | 10 |
4 |
10 |
||
| Sarnia | 25 |
7 |
12 |
1.8 |
|
| Sault Ste. Marie | 36 |
4 |
2.5 |
0 |
|
| St. Catharines | 32 |
4 |
3.3 |
||
| Sudbury | 33 |
5 |
1.8 |
0.8 |
|
| Thunder Bay | 13 |
13 |
2.9 |
||
| Tiverton | 31 |
5 |
|||
| Toronto Downtown | 21 |
7 |
14.3 |
||
| Toronto East | 15 |
7 |
14.6 |
||
| Toronto North | 16 |
6 |
7.6 |
0 |
|
| Toronto West | 7 |
6 |
21.7 |
0.2 |
0.22 |
| Windsor Downtown | 28 |
6 |
9.1 |
0 |
N/A |
| Windsor West | 15 |
6 |
13.7 |
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.
