Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 18 |
3 |
1.2 |
||
| Belleville | 15 |
3 |
1.5 |
||
| Brampton | 15 |
3 |
2.5 |
||
| Brantford | 17 |
3 |
1.9 |
||
| Burlington | 15 |
3 |
5.4 |
||
| Chatham | 9 |
4 |
1.6 |
||
| Cornwall | 9 |
5 |
3.5 |
||
| Dorset | 8 |
3 |
|||
| Grand Bend | 15 |
3 |
1.7 |
||
| Guelph | 21 |
3 |
1 |
||
| Hamilton Downtown | 16 |
3 |
3.2 |
1 |
0.21 |
| Hamilton Mountain | 19 |
3 |
3.4 |
0.5 |
|
| Hamilton West | 17 |
3 |
4.5 |
||
| Kingston | 12 |
3 |
1.7 |
||
| Kitchener | 18 |
3 |
1.6 |
||
| London | 17 |
4 |
2.7 |
||
| Milton | 18 |
2 |
2.6 |
0.1 |
|
| Mississauga | 12 |
4 |
7.7 |
||
| Newmarket | 17 |
3 |
1.3 |
||
| North Bay | 8 |
3 |
1.8 |
||
| Oakville | 15 |
3 |
4.4 |
||
| Oshawa | 18 |
3 |
0.7 |
||
| Ottawa Downtown | 16 |
4 |
3.2 |
||
| Parry Sound | 16 |
3 |
1.1 |
||
| Peterborough | 20 |
2 |
0.8 |
||
| Port Stanley | 15 |
4 |
2.4 |
||
| Sarnia | 25 |
3 |
1.3 |
0.2 |
|
| Sault Ste. Marie | 15 |
2 |
0.5 |
0 |
|
| St. Catharines | 18 |
3 |
1.8 |
||
| Sudbury | 16 |
3 |
0.6 |
0.1 |
|
| Thunder Bay | 19 |
3 |
0.7 |
||
| Tiverton | 17 |
3 |
|||
| Toronto Downtown | 16 |
3 |
7.7 |
||
| Toronto East | 14 |
3 |
4.9 |
||
| Toronto North | 16 |
3 |
2.4 |
0 |
|
| Toronto West | 10 |
3 |
5.9 |
0 |
0.26 |
| Windsor Downtown | 9 |
5 |
12.8 |
0 |
N/A |
| Windsor West | 11 |
5 |
10.3 |
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.
