Current Pollutant Concentrations

Air Pollutant 1-Hour Concentrations For Tuesday, July 22, 2014, 6:00 pm

Station O3 (ppb) PM2.5 (µg/m3) NO2 (ppb) SO2 (ppb) CO (ppm)
60
graph
16
graph
5
graph
   
64
graph
10
graph
2
graph
   
64
graph
10
graph
3
graph
   
60
graph
10
graph
0
graph
   
50
graph
10
graph
9
graph
   
65
graph
19
graph
4
graph
   
51
graph
11
graph
2
graph
   
67
graph
15
graph
     
60
graph
11
graph
0
graph
   
56
graph
18
graph
2
graph
   
56
graph
8
graph
4
graph
1
graph
.23
graph
57
graph
7
graph
3
graph
0
graph
 
49
graph
7
graph
4
graph
   
58
graph
10
graph
1
graph
   
57
graph
11
graph
2
graph
   
58
graph
9
graph
2
graph
   
66
graph
14
graph
7
graph
3
graph
 
54
graph
10
graph
     
75
graph
14
graph
5
graph
   
66
graph
14
graph
2
graph
   
68
graph
14
graph
5
graph
   
64
graph
15
graph
4
graph
   
59
graph
13
graph
2
graph
   
51
graph
16
graph
3
graph
0
graph
.22
graph
64
graph
15
graph
2
graph
   
54
graph
25
graph
     
63
graph
12
graph
3
graph
   
66
graph
12
graph
     
79
graph
17
graph
11
graph
27
graph
 
40
graph
19
graph
7
graph
5
graph
 
56
graph
12
graph
3
graph
   
61
graph
11
graph
3
graph
0
graph
 
20
graph
3
graph
1
graph
   
78
graph
17
graph
1
graph
   
55
graph
15
graph
22
graph
   
65
graph
10
graph
7
graph
   
71
graph
11
graph
10
graph
   
68
graph
13
graph
6
graph
1
graph
.25
graph
70
graph
17
graph
6
graph
8
graph
.23
graph
69
graph
19
graph
6
graph
7
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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