Current Pollutant Concentrations

Air Pollutant 1-Hour Concentrations For Thursday, December 18, 2014, 8:00 pm

Station O3 (ppb) PM2.5 (µg/m3) NO2 (ppb) SO2 (ppb) CO (ppm)
25
graph
3
graph
4
graph
   
23
graph
1
graph
3
graph
   
23
graph
4
graph
5
graph
   
25
graph
9
graph
2
graph
   
20
graph
11
graph
5
graph
   
9
graph
11
graph
9
graph
   
18
graph
3
graph
4
graph
   
31
graph
2
graph
     
31
graph
4
graph
1
graph
   
25
graph
7
graph
3
graph
   
17
graph
10
graph
9
graph
1
graph
.18
graph
21
graph
12
graph
4
graph
1
graph
 
16
graph
10
graph
11
graph
   
21
graph
2
graph
3
graph
   
23
graph
4
graph
3
graph
   
23
graph
6
graph
5
graph
   
19
graph
6
graph
5
graph
2
graph
 
20
graph
3
graph
     
29
graph
2
graph
3
graph
   
31
graph
3
graph
4
graph
   
21
graph
6
graph
2
graph
   
25
graph
2
graph
2
graph
   
21
graph
3
graph
3
graph
   
21
graph
2
graph
3
graph
0
graph
.16
graph
30
graph
2
graph
2
graph
   
29
graph
2
graph
     
26
graph
3
graph
2
graph
   
21
graph
3
graph
1
graph
   
15
graph
4
graph
5
graph
0
graph
 
26
graph
9
graph
16
graph
0
graph
 
18
graph
9
graph
5
graph
   
27
graph
5
graph
11
graph
0
graph
 
6
graph
17
graph
36
graph
   
31
graph
4
graph
2
graph
   
22
graph
6
graph
8
graph
   
19
graph
5
graph
11
graph
   
27
graph
7
graph
5
graph
   
18
graph
5
graph
14
graph
1
graph
.21
graph
4
graph
16
graph
22
graph
0
graph
.3
graph
5
graph
5
graph
20
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