Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 24 |
7 |
3.4 |
||
| Belleville | 32 |
6 |
2.5 |
||
| Brampton | 33 |
7 |
2.3 |
||
| Brantford | 23 |
7 |
1.1 |
||
| Burlington | 32 |
10 |
5.3 |
||
| Chatham | 33 |
7 |
2.6 |
||
| Cornwall | 29 |
6 |
0.6 |
||
| Dorset | 9 |
10 |
|||
| Grand Bend | 31 |
7 |
1.8 |
||
| Guelph | 26 |
7 |
3.4 |
||
| Hamilton Downtown | 29 |
7 |
3.1 |
0.4 |
0.24 |
| Hamilton Mountain | 34 |
7 |
2.8 |
1 |
|
| Hamilton West | 32 |
8 |
4.1 |
||
| Kingston | 34 |
7 |
1.3 |
||
| Kitchener | 33 |
7 |
2.4 |
||
| London | 30 |
7 |
1.5 |
||
| Milton | 31 |
8 |
6.6 |
N/A |
|
| Mississauga | 33 |
7 |
2.8 |
||
| Newmarket | 37 |
7 |
1.4 |
||
| North Bay | 35 |
10 |
0 |
||
| Oakville | 34 |
7 |
2 |
||
| Oshawa | 6 |
7 |
6.8 |
||
| Ottawa Downtown | 29 |
5 |
2.3 |
||
| Parry Sound | 48 |
8 |
1.1 |
||
| Peterborough | 31 |
6 |
3.2 |
||
| Port Stanley | 33 |
6 |
0.7 |
||
| Sarnia | 28 |
11 |
9.8 |
7.1 |
|
| Sault Ste. Marie | 28 |
9 |
2.2 |
0 |
|
| St. Catharines | 26 |
7 |
4.7 |
||
| Sudbury | 31 |
10 |
2.4 |
1.2 |
|
| Thunder Bay | 15 |
7 |
3.7 |
||
| Tiverton | 38 |
10 |
|||
| Toronto Downtown | 20 |
10 |
19.6 |
||
| Toronto East | 27 |
9 |
7.9 |
||
| Toronto North | 28 |
8 |
9.6 |
0 |
|
| Toronto West | 26 |
7 |
13.7 |
0.2 |
0.23 |
| Windsor Downtown | 36 |
7 |
5 |
0 |
0.17 |
| Windsor West | 37 |
9 |
1.9 |
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.
