Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 39 |
5 |
1.2 |
||
| Belleville | 52 |
5 |
1.8 |
||
| Brampton | 45 |
4 |
1.4 |
||
| Brantford | 49 |
5 |
0.5 |
||
| Burlington | 45 |
5 |
3.6 |
||
| Chatham | 55 |
5 |
1.7 |
||
| Cornwall | 37 |
8 |
0.9 |
||
| Dorset | 46 |
3 |
|||
| Grand Bend | 44 |
12 |
1.9 |
||
| Guelph | 45 |
4 |
0.4 |
||
| Hamilton Downtown | 47 |
6 |
1.2 |
0.6 |
0.16 |
| Hamilton Mountain | 47 |
5 |
0.6 |
0 |
|
| Hamilton West | 47 |
5 |
2.8 |
||
| Kingston | 50 |
9 |
1.2 |
||
| Kitchener | 44 |
5 |
1.2 |
||
| London | 47 |
4 |
1.4 |
||
| Milton | 45 |
5 |
3.2 |
0.4 |
|
| Mississauga | 45 |
4 |
0.9 |
||
| Newmarket | 42 |
6 |
1.5 |
||
| North Bay | 40 |
3 |
1.1 |
||
| Oakville | 45 |
5 |
1.3 |
||
| Oshawa | 43 |
5 |
1.3 |
||
| Ottawa Downtown | 33 |
5 |
2.2 |
||
| Parry Sound | 37 |
9 |
0.9 |
||
| Peterborough | 42 |
4 |
1.2 |
||
| Port Stanley | 52 |
6 |
2.5 |
||
| Sarnia | 49 |
6 |
2 |
0.1 |
|
| Sault Ste. Marie | 38 |
7 |
0.8 |
N/A |
|
| St. Catharines | 48 |
4 |
1.9 |
||
| Sudbury | 34 |
5 |
0.9 |
0.3 |
|
| Thunder Bay | 29 |
16 |
1.6 |
||
| Tiverton | 41 |
7 |
|||
| Toronto Downtown | 43 |
20 |
6.3 |
||
| Toronto East | 41 |
6 |
2.7 |
||
| Toronto North | 46 |
5 |
1.7 |
0.5 |
|
| Toronto West | 42 |
5 |
5 |
0 |
0.17 |
| Windsor Downtown | 50 |
7 |
2.7 |
0 |
0.19 |
| Windsor West | 51 |
11 |
2.6 |
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.
