Current Pollutant Concentrations

Air Pollutant 1-Hour Concentrations For Saturday, February 28, 2015, 5:00 pm

Station O3 (ppb) PM2.5 (µg/m3) NO2 (ppb) SO2 (ppb) CO (ppm)
44
graph
16
graph
8
graph
   
42
graph
6
graph
6
graph
   
45
graph
12
graph
8
graph
   
47
graph
10
graph
6
graph
   
40
graph
12
graph
11
graph
   
49
graph
12
graph
6
graph
   
45
graph
8
graph
4
graph
   
47
graph
5
graph
     
47
graph
11
graph
6
graph
   
41
graph
11
graph
10
graph
   
42
graph
13
graph
11
graph
3
graph
.28
graph
42
graph
14
graph
13
graph
5
graph
 
43
graph
9
graph
8
graph
   
42
graph
7
graph
4
graph
   
41
graph
11
graph
12
graph
   
44
graph
13
graph
7
graph
   
43
graph
11
graph
9
graph
3
graph
 
44
graph
9
graph
     
49
graph
10
graph
7
graph
   
47
graph
7
graph
3
graph
   
43
graph
12
graph
N/A
graph
   
37
graph
13
graph
12
graph
   
47
graph
8
graph
4
graph
   
43
graph
10
graph
8
graph
1
graph
.22
graph
49
graph
8
graph
3
graph
   
45
graph
4
graph
     
43
graph
12
graph
7
graph
   
48
graph
10
graph
4
graph
   
42
graph
12
graph
12
graph
11
graph
 
43
graph
7
graph
4
graph
1
graph
 
49
graph
9
graph
5
graph
   
42
graph
7
graph
5
graph
1
graph
 
36
graph
8
graph
8
graph
   
49
graph
10
graph
6
graph
   
40
graph
13
graph
12
graph
   
33
graph
14
graph
17
graph
   
41
graph
15
graph
12
graph
   
42
graph
14
graph
11
graph
2
graph
.21
graph
46
graph
11
graph
9
graph
4
graph
.24
graph
50
graph
12
graph
5
graph
3
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