Current Pollutant Concentrations

Air Pollutant 1-Hour Concentrations For Friday, October 31, 2014, 9:00 pm

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