Pollutant Concentrations for May 22, 2025, 12:00 pm EDT
Choose Date Options:
| Station | O3 (ppb) | PM2.5 (µg/m3) | NO2 (ppb) | SO2 (ppb) | CO (ppm) |
|---|---|---|---|---|---|
21  |
2 |
0.7 |
|||
29 |
3 |
1.4 |
|||
9 |
3 |
11.1 |
|||
15 |
1 |
1.7 |
|||
18 |
3 |
5.5 |
|||
19 |
1 |
2.1 |
|||
30 |
3 |
2.5 |
|||
25 |
0 |
||||
22 |
1 |
0.8 |
|||
13 |
3 |
5.9 |
|||
4 |
13 |
18.6 |
0.9 |
0.39 |
|
12 |
3 |
2.8 |
0.3 |
||
5 |
9 |
18 |
|||
28 |
1 |
1.1 |
|||
9 |
2 |
6.9 |
|||
15 |
1 |
2.3 |
|||
12 |
3 |
7.5 |
0.2 |
||
8 |
2 |
6.6 |
|||
20 |
1 |
2.7 |
|||
29 |
1 |
1.9 |
|||
12 |
3 |
6.3 |
|||
23 |
0 |
1.5 |
|||
28 |
3 |
1.3 |
|||
24 |
0 |
1.9 |
|||
23 |
0 |
1.6 |
|||
18 |
1 |
1.3 |
|||
23 |
1 |
2.9 |
0 |
||
19 |
1 |
0.9 |
0.1 |
||
14 |
1 |
3 |
|||
27 |
2 |
1.4 |
0 |
||
42 |
2 |
1.7 |
|||
21 |
1 |
||||
11 |
2 |
15.3 |
|||
20 |
1 |
2.2 |
|||
17 |
3 |
5.5 |
0.3 |
||
16 |
3 |
7.9 |
0 |
0.19 |
|
13 |
2 |
5.2 |
0 |
0.19 |
|
15 |
2 |
3.5 |
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.
