Current Pollutant Concentrations

Air Pollutant 1-Hour Concentrations For Wednesday, October 1, 2014, 9:00 pm

Station O3 (ppb) PM2.5 (µg/m3) NO2 (ppb) SO2 (ppb) CO (ppm)
21
graph
12
graph
3
graph
   
17
graph
10
graph
7
graph
   
13
graph
16
graph
23
graph
   
20
graph
14
graph
6
graph
   
27
graph
11
graph
2
graph
   
21
graph
14
graph
14
graph
   
7
graph
10
graph
10
graph
   
7
graph
11
graph
     
13
graph
16
graph
6
graph
   
16
graph
10
graph
9
graph
   
13
graph
15
graph
19
graph
47
graph
.45
graph
25
graph
16
graph
6
graph
0
graph
 
12
graph
12
graph
17
graph
   
12
graph
10
graph
12
graph
   
16
graph
8
graph
6
graph
   
17
graph
10
graph
9
graph
   
9
graph
12
graph
15
graph
1
graph
 
11
graph
10
graph
     
20
graph
15
graph
10
graph
   
17
graph
8
graph
3
graph
   
19
graph
9
graph
8
graph
   
14
graph
12
graph
9
graph
   
15
graph
10
graph
6
graph
   
14
graph
14
graph
6
graph
0
graph
.19
graph
16
graph
29
graph
5
graph
   
13
graph
6
graph
     
14
graph
11
graph
10
graph
   
26
graph
9
graph
     
26
graph
19
graph
9
graph
0
graph
 
15
graph
3
graph
2
graph
0
graph
 
25
graph
12
graph
4
graph
   
10
graph
4
graph
8
graph
0
graph
 
14
graph
3
graph
6
graph
   
19
graph
12
graph
5
graph
   
25
graph
6
graph
12
graph
   
30
graph
10
graph
6
graph
   
17
graph
12
graph
19
graph
   
21
graph
10
graph
11
graph
0
graph
.24
graph
28
graph
12
graph
15
graph
0
graph
.31
graph
27
graph
12
graph
14
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