Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 36 |
21 |
2.3 |
||
| Belleville | 34 |
7 |
4.9 |
||
| Brampton | 31 |
11 |
3.5 |
||
| Brantford | 24 |
9 |
5.1 |
||
| Burlington | 21 |
11 |
8.8 |
||
| Chatham | 24 |
9 |
4.3 |
||
| Cornwall | 35 |
11 |
1.3 |
||
| Dorset | 33 |
21 |
|||
| Grand Bend | 20 |
9 |
1.8 |
||
| Guelph | 30 |
7 |
2.1 |
||
| Hamilton Downtown | 26 |
12 |
5.5 |
0.3 |
0.2 |
| Hamilton Mountain | 26 |
9 |
4.1 |
0.2 |
|
| Hamilton West | 24 |
10 |
6 |
||
| Kingston | 33 |
17 |
2.6 |
||
| Kitchener | 34 |
7 |
1.8 |
||
| London | 8 |
13 |
3.8 |
||
| Milton | 26 |
10 |
8.6 |
0.2 |
|
| Mississauga | 24 |
11 |
7 |
||
| Newmarket | 31 |
23 |
3.1 |
||
| North Bay | 24 |
7 |
1.4 |
||
| Oakville | 23 |
11 |
6.7 |
||
| Oshawa | 13 |
17 |
5.8 |
||
| Ottawa Downtown | 29 |
23 |
2.9 |
||
| Parry Sound | 42 |
22 |
0.8 |
||
| Peterborough | 32 |
24 |
2.2 |
||
| Port Stanley | 24 |
12 |
4 |
||
| Sarnia | 30 |
17 |
6.2 |
0.2 |
|
| Sault Ste. Marie | 21 |
18 |
4 |
N/A |
|
| St. Catharines | 31 |
7 |
3.3 |
||
| Sudbury | 25 |
5 |
2.8 |
0 |
|
| Thunder Bay | 2 |
15 |
6.1 |
||
| Tiverton | 31 |
31 |
|||
| Toronto Downtown | 24 |
15 |
13.3 |
||
| Toronto East | 21 |
14 |
12.1 |
||
| Toronto North | 26 |
14 |
9.9 |
0.4 |
|
| Toronto West | 15 |
13 |
18.1 |
0.2 |
0.26 |
| Windsor Downtown | 32 |
13 |
14 |
0 |
0.23 |
| Windsor West | 33 |
18 |
12.2 |
0.2 |
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.
