Current Pollutant Concentrations

Air Pollutant 1-Hour Concentrations For Friday, October 24, 2014, 2:00 pm

Station O3 (ppb) PM2.5 (µg/m3) NO2 (ppb) SO2 (ppb) CO (ppm)
31
graph
8
graph
4
graph
   
28
graph
3
graph
1
graph
   
31
graph
5
graph
3
graph
   
30
graph
11
graph
4
graph
   
19
graph
16
graph
11
graph
   
39
graph
14
graph
6
graph
   
33
graph
3
graph
2
graph
   
29
graph
4
graph
     
42
graph
23
graph
6
graph
   
28
graph
15
graph
5
graph
   
23
graph
17
graph
9
graph
1
graph
.21
graph
27
graph
16
graph
6
graph
0
graph
 
24
graph
12
graph
8
graph
   
26
graph
4
graph
2
graph
   
32
graph
14
graph
5
graph
   
39
graph
9
graph
6
graph
   
29
graph
8
graph
5
graph
1
graph
 
29
graph
4
graph
     
33
graph
9
graph
3
graph
   
27
graph
4
graph
1
graph
   
N/A
graph
N/A
graph
N/A
graph
   
31
graph
2
graph
4
graph
   
22
graph
4
graph
2
graph
   
20
graph
6
graph
4
graph
0
graph
.16
graph
35
graph
2
graph
1
graph
   
23
graph
2
graph
     
33
graph
4
graph
2
graph
   
35
graph
12
graph
     
33
graph
13
graph
7
graph
2
graph
 
10
graph
18
graph
11
graph
0
graph
 
21
graph
10
graph
12
graph
   
28
graph
10
graph
7
graph
2
graph
 
13
graph
12
graph
9
graph
   
38
graph
12
graph
4
graph
   
21
graph
16
graph
17
graph
   
25
graph
8
graph
15
graph
   
32
graph
9
graph
8
graph
   
22
graph
8
graph
18
graph
1
graph
.2
graph
20
graph
13
graph
18
graph
25
graph
.3
graph
25
graph
14
graph
14
graph
5
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