Current Pollutant Concentrations

Air Pollutant 1-Hour Concentrations For Wednesday, April 23, 2014, 10:00 pm

Station O3 (ppb) PM2.5 (µg/m3) NO2 (ppb) SO2 (ppb) CO (ppm)
42
graph
5
graph
3
graph
   
48
graph
3
graph
1
graph
   
41
graph
4
graph
5
graph
   
43
graph
5
graph
0
graph
   
39
graph
4
graph
3
graph
   
43
graph
3
graph
3
graph
   
35
graph
4
graph
7
graph
   
41
graph
4
graph
     
46
graph
4
graph
0
graph
   
41
graph
4
graph
3
graph
   
40
graph
5
graph
3
graph
0
graph
.16
graph
42
graph
5
graph
4
graph
1
graph
 
38
graph
6
graph
6
graph
   
43
graph
3
graph
3
graph
   
40
graph
6
graph
5
graph
   
34
graph
1
graph
9
graph
   
42
graph
5
graph
5
graph
3
graph
 
37
graph
4
graph
     
45
graph
4
graph
3
graph
   
28
graph
12
graph
19
graph
   
43
graph
5
graph
3
graph
   
46
graph
3
graph
2
graph
   
49
graph
1
graph
2
graph
   
49
graph
4
graph
2
graph
0
graph
.14
graph
45
graph
7
graph
1
graph
   
49
graph
3
graph
     
43
graph
4
graph
2
graph
   
39
graph
2
graph
     
42
graph
4
graph
5
graph
0
graph
 
41
graph
4
graph
5
graph
0
graph
 
45
graph
3
graph
6
graph
   
39
graph
7
graph
8
graph
1
graph
 
29
graph
7
graph
24
graph
   
48
graph
4
graph
1
graph
   
42
graph
6
graph
N/A
graph
   
36
graph
4
graph
15
graph
   
44
graph
6
graph
6
graph
   
22
graph
4
graph
30
graph
2
graph
.27
graph
30
graph
5
graph
19
graph
7
graph
.19
graph
34
graph
7
graph
16
graph
4
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.

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