Pollutant Concentrations for May 24, 2025, 12:00 am EDT
Choose Date Options:
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
24  |
3 |
0.8 |
|||
11 |
2 |
3.7 |
|||
21 |
2 |
1.9 |
|||
21 |
1 |
0.5 |
|||
20 |
2 |
3.7 |
|||
14 |
1 |
4 |
|||
21 |
2 |
2.2 |
|||
18 |
1 |
||||
18 |
1 |
0.7 |
|||
19 |
2 |
0.6 |
|||
19 |
3 |
3.2 |
0.3 |
0.14 |
|
20 |
2 |
0.8 |
0 |
||
19 |
2 |
2.2 |
|||
23 |
3 |
3.2 |
|||
17 |
1 |
0.8 |
|||
18 |
2 |
2 |
|||
19 |
2 |
4.7 |
0.3 |
||
22 |
2 |
2 |
|||
24 |
2 |
1.1 |
|||
20 |
1 |
1.1 |
|||
21 |
2 |
1.7 |
|||
24 |
1 |
0.5 |
|||
20 |
3 |
2.9 |
|||
23 |
1 |
0.6 |
|||
21 |
1 |
0.8 |
|||
20 |
2 |
0.9 |
|||
19 |
1 |
1 |
0 |
||
14 |
2 |
4.1 |
0.1 |
||
21 |
2 |
2.3 |
|||
22 |
3 |
2 |
0 |
||
32 |
2 |
2.8 |
|||
17 |
1 |
||||
18 |
4 |
7.8 |
|||
17 |
1 |
4.9 |
|||
20 |
1 |
4.5 |
0.4 |
||
11 |
2 |
13.7 |
0 |
0.22 |
|
20 |
3 |
2.6 |
0 |
0.14 |
|
19 |
2 |
3.6 |
0.1 |
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.
