Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 10 |
11 |
5.3 |
||
| Belleville | 13 |
11 |
13.3 |
||
| Brampton | 4 |
12 |
23.7 |
||
| Brantford | 14 |
10 |
2.6 |
||
| Burlington | 1 |
8 |
33.1 |
||
| Chatham | 36 |
8 |
4 |
||
| Cornwall | 14 |
10 |
4.3 |
||
| Dorset | 9 |
5 |
|||
| Grand Bend | 8 |
6 |
1.2 |
||
| Guelph | 17 |
9 |
6.2 |
||
| Hamilton Downtown | 6 |
17 |
22.7 |
1 |
0.48 |
| Hamilton Mountain | 10 |
9 |
11.4 |
0 |
|
| Hamilton West | 1 |
8 |
16.2 |
||
| Kingston | 28 |
7 |
3.8 |
||
| Kitchener | 24 |
10 |
7.1 |
||
| London | 13 |
10 |
6.8 |
||
| Milton | 1 |
13 |
22.9 |
0.3 |
|
| Mississauga | 2 |
7 |
12.4 |
||
| Newmarket | 13 |
11 |
10.2 |
||
| North Bay | 18 |
7 |
5.1 |
||
| Oakville | 23 |
12 |
9.4 |
||
| Oshawa | 10 |
8 |
2.5 |
||
| Ottawa Downtown | 19 |
7 |
9 |
||
| Parry Sound | 13 |
10 |
6.3 |
||
| Peterborough | 28 |
6 |
2 |
||
| Port Stanley | 33 |
8 |
1.9 |
||
| Sarnia | 4 |
14 |
17.3 |
0 |
|
| Sault Ste. Marie | 35 |
7 |
0.9 |
0 |
|
| St. Catharines | 12 |
12 |
7.6 |
||
| Sudbury | 33 |
7 |
2.1 |
2.9 |
|
| Thunder Bay | 15 |
3 |
0.9 |
||
| Tiverton | 25 |
4 |
|||
| Toronto Downtown | 3 |
28 |
42.2 |
||
| Toronto East | 3 |
14 |
28.2 |
||
| Toronto North | 4 |
12 |
16.2 |
0.2 |
|
| Toronto West | 2 |
14 |
28 |
0 |
0.52 |
| Windsor Downtown | 10 |
31 |
36.3 |
0 |
0.34 |
| Windsor West | 12 |
19 |
17.4 |
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.
