Current Pollutant Concentrations

Air Pollutant 1-Hour Concentrations For Tuesday, October 21, 2014, 8:00 am

Station O3 (ppb) PM2.5 (µg/m3) NO2 (ppb) SO2 (ppb) CO (ppm)
5
graph
4
graph
10
graph
   
21
graph
3
graph
3
graph
   
3
graph
7
graph
16
graph
   
13
graph
6
graph
3
graph
   
6
graph
8
graph
13
graph
   
11
graph
4
graph
7
graph
   
13
graph
12
graph
8
graph
   
18
graph
1
graph
     
17
graph
3
graph
1
graph
   
5
graph
1
graph
7
graph
   
7
graph
5
graph
12
graph
0
graph
.2
graph
9
graph
4
graph
9
graph
0
graph
 
10
graph
6
graph
6
graph
   
27
graph
6
graph
3
graph
   
7
graph
2
graph
5
graph
   
11
graph
6
graph
6
graph
   
1
graph
9
graph
17
graph
1
graph
 
18
graph
12
graph
     
9
graph
5
graph
8
graph
   
25
graph
3
graph
2
graph
   
4
graph
6
graph
11
graph
   
3
graph
17
graph
11
graph
   
17
graph
8
graph
8
graph
   
18
graph
5
graph
7
graph
0
graph
N/A
graph
17
graph
3
graph
2
graph
   
24
graph
4
graph
     
15
graph
2
graph
4
graph
   
16
graph
3
graph
     
11
graph
4
graph
16
graph
0
graph
 
16
graph
5
graph
5
graph
0
graph
 
3
graph
15
graph
16
graph
   
16
graph
5
graph
3
graph
1
graph
 
2
graph
4
graph
16
graph
   
14
graph
2
graph
2
graph
   
0
graph
10
graph
22
graph
   
0
graph
9
graph
20
graph
   
1
graph
11
graph
19
graph
   
1
graph
10
graph
20
graph
1
graph
.45
graph
8
graph
4
graph
11
graph
0
graph
.19
graph
9
graph
3
graph
11
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.

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