Current Pollutant Concentrations

Air Pollutant 1-Hour Concentrations For Thursday, May 28, 2015, 1:00 am

Station O3 (ppb) PM2.5 (µg/m3) NO2 (ppb) SO2 (ppb) CO (ppm)
34
graph
6
graph
2
graph
   
54
graph
1
graph
2
graph
   
36
graph
4
graph
3
graph
   
47
graph
5
graph
2
graph
   
43
graph
6
graph
4
graph
   
27
graph
9
graph
6
graph
   
51
graph
8
graph
3
graph
   
30
graph
5
graph
     
40
graph
8
graph
1
graph
   
33
graph
8
graph
4
graph
   
45
graph
4
graph
3
graph
0
graph
.16
graph
46
graph
5
graph
3
graph
1
graph
 
42
graph
4
graph
4
graph
   
51
graph
3
graph
2
graph
   
30
graph
8
graph
3
graph
   
32
graph
6
graph
3
graph
   
42
graph
5
graph
3
graph
2
graph
 
50
graph
6
graph
     
36
graph
6
graph
4
graph
   
35
graph
2
graph
1
graph
   
41
graph
6
graph
3
graph
   
42
graph
8
graph
4
graph
   
43
graph
6
graph
4
graph
   
44
graph
6
graph
5
graph
0
graph
.15
graph
38
graph
6
graph
1
graph
   
39
graph
7
graph
     
41
graph
5
graph
7
graph
   
50
graph
5
graph
2
graph
   
41
graph
2
graph
3
graph
1
graph
 
18
graph
11
graph
6
graph
0
graph
 
51
graph
3
graph
2
graph
   
38
graph
1
graph
5
graph
0
graph
 
22
graph
5
graph
4
graph
   
45
graph
6
graph
1
graph
   
35
graph
8
graph
11
graph
   
32
graph
9
graph
12
graph
   
39
graph
4
graph
8
graph
   
35
graph
6
graph
10
graph
0
graph
.18
graph
41
graph
3
graph
8
graph
0
graph
.2
graph
39
graph
2
graph
9
graph
0
graph
 

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 = 250 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.

Disclaimer