Choose date options.
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
| Barrie | 21 |
1 |
0.2 |
||
| Belleville | 22 |
2 |
1 |
||
| Brampton | 24 |
1 |
0.7 |
||
| Brantford | 21 |
3 |
1.3 |
||
| Burlington | 20 |
3 |
4.1 |
||
| Chatham | 18 |
3 |
6 |
||
| Cornwall | 25 |
3 |
0.5 |
||
| Dorset | 19 |
1 |
|||
| Grand Bend | 29 |
3 |
0.3 |
||
| Guelph | 21 |
2 |
1.4 |
||
| Hamilton Downtown | 21 |
2 |
1 |
0.1 |
0.17 |
| Hamilton Mountain | 22 |
2 |
2.7 |
0.3 |
|
| Hamilton West | 20 |
3 |
3.5 |
||
| Kingston | 24 |
2 |
1 |
||
| Kitchener | 21 |
2 |
1 |
||
| London | 24 |
2 |
1.8 |
||
| Milton | 24 |
1 |
0.8 |
0 |
|
| Mississauga | 24 |
2 |
1.1 |
||
| Newmarket | 20 |
2 |
0.6 |
||
| North Bay | 7 |
2 |
3.3 |
||
| Oakville | 22 |
2 |
0.8 |
||
| Oshawa | 21 |
2 |
0.8 |
||
| Ottawa Downtown | 22 |
1 |
0.9 |
||
| Parry Sound | 16 |
2 |
1.2 |
||
| Peterborough | 21 |
2 |
0.3 |
||
| Port Stanley | 24 |
3 |
0.6 |
||
| Sarnia | 26 |
3 |
0.9 |
0 |
|
| Sault Ste. Marie | 29 |
2 |
0.7 |
0 |
|
| St. Catharines | 25 |
2 |
1.7 |
||
| Sudbury | 19 |
1 |
0.5 |
0 |
|
| Thunder Bay | 12 |
4 |
3.1 |
||
| Tiverton | 26 |
1 |
|||
| Toronto Downtown | 23 |
3 |
3.9 |
||
| Toronto East | 22 |
2 |
1.9 |
||
| Toronto North | 22 |
2 |
2.6 |
0 |
|
| Toronto West | 21 |
2 |
4.2 |
0 |
0.18 |
| Windsor Downtown | 25 |
3 |
6.4 |
0.1 |
N/A |
| Windsor West | 25 |
3 |
3.1 |
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.
