Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 32 |
5 |
0.9 |
||
| Belleville | 34 |
4 |
2.2 |
||
| Brampton | 24 |
4 |
6.7 |
||
| Brantford | 28 |
5 |
4.4 |
||
| Burlington | 32 |
4 |
2 |
||
| Chatham | 27 |
5 |
3 |
||
| Cornwall | 34 |
7 |
2.3 |
||
| Dorset | 43 |
2 |
|||
| Grand Bend | 28 |
7 |
3.4 |
||
| Guelph | 26 |
4 |
5.7 |
||
| Hamilton Downtown | 27 |
5 |
6.1 |
0.8 |
0.19 |
| Hamilton Mountain | 30 |
5 |
3.9 |
0.4 |
|
| Hamilton West | 29 |
4 |
4.7 |
||
| Kingston | 33 |
5 |
3.3 |
||
| Kitchener | 28 |
4 |
3.7 |
||
| London | 27 |
10 |
N/A |
||
| Milton | 30 |
4 |
1.9 |
0.2 |
|
| Mississauga | 29 |
5 |
2.8 |
||
| Newmarket | 27 |
4 |
3.4 |
||
| North Bay | 39 |
3 |
0.5 |
||
| Oakville | 29 |
5 |
3.4 |
||
| Oshawa | 30 |
4 |
1.8 |
||
| Ottawa Downtown | 41 |
5 |
2.5 |
||
| Parry Sound | 40 |
4 |
1.9 |
||
| Peterborough | 35 |
4 |
1.5 |
||
| Port Stanley | 28 |
5 |
2.8 |
||
| Sarnia | 27 |
5 |
4.5 |
0 |
|
| Sault Ste. Marie | 39 |
3 |
1.6 |
0.4 |
|
| St. Catharines | 25 |
4 |
3.3 |
||
| Sudbury | 38 |
4 |
4.5 |
0.1 |
|
| Thunder Bay | 35 |
3 |
1.4 |
||
| Tiverton | 29 |
3 |
|||
| Toronto Downtown | 20 |
7 |
29.8 |
||
| Toronto East | 28 |
5 |
3.3 |
||
| Toronto North | 25 |
6 |
4.3 |
0 |
|
| Toronto West | 27 |
5 |
5.1 |
0 |
0.17 |
| Windsor Downtown | 25 |
6 |
5.2 |
0 |
0.2 |
| Windsor West | 24 |
5 |
4.7 |
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.
