Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 36 |
46 |
2.1 |
||
| Belleville | 25 |
7 |
3.4 |
||
| Brampton | 38 |
8 |
5 |
||
| Brantford | 27 |
12 |
3.3 |
||
| Burlington | 33 |
7 |
2.5 |
||
| Chatham | 44 |
11 |
1.7 |
||
| Cornwall | 28 |
11 |
3.4 |
||
| Dorset | 18 |
8 |
|||
| Grand Bend | 37 |
10 |
1.5 |
||
| Guelph | 35 |
9 |
3.6 |
||
| Hamilton Downtown | 28 |
11 |
5.4 |
0.7 |
0.26 |
| Hamilton Mountain | 35 |
9 |
3.7 |
0.1 |
|
| Hamilton West | 19 |
10 |
11.9 |
||
| Kingston | 18 |
7 |
7.7 |
||
| Kitchener | 32 |
10 |
7.2 |
||
| London | 25 |
12 |
4.7 |
||
| Milton | 37 |
8 |
4.6 |
1.7 |
|
| Mississauga | 34 |
6 |
1.5 |
||
| Newmarket | 35 |
9 |
3.6 |
||
| North Bay | 14 |
8 |
8.6 |
||
| Oakville | 34 |
6 |
1.6 |
||
| Oshawa | 29 |
8 |
3.2 |
||
| Ottawa Downtown | 21 |
5 |
5.6 |
||
| Parry Sound | 47 |
10 |
1.4 |
||
| Peterborough | 25 |
9 |
4.6 |
||
| Port Stanley | 38 |
11 |
1.6 |
||
| Sarnia | 43 |
13 |
4.3 |
0.3 |
|
| Sault Ste. Marie | 36 |
7 |
1 |
0 |
|
| St. Catharines | 25 |
7 |
5.6 |
||
| Sudbury | 10 |
6 |
14.9 |
0.1 |
|
| Thunder Bay | 15 |
11 |
5.4 |
||
| Tiverton | 19 |
4 |
|||
| Toronto Downtown | 22 |
9 |
20.8 |
||
| Toronto East | 36 |
9 |
3.7 |
||
| Toronto North | 38 |
9 |
4.1 |
0 |
|
| Toronto West | 36 |
9 |
8.7 |
0 |
0.19 |
| Windsor Downtown | 45 |
11 |
3.3 |
0 |
0.15 |
| Windsor West | 45 |
11 |
3.2 |
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.
