Pollutant Concentrations for April 18, 2021, 4:00 pm EDT

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Air Pollutant 1-Hour Concentrations For April 18, 2021, 4:00 pm EDT
Station O3 (ppb) PM2.5 (µg/m3) NO2 (ppb) SO2 (ppb) CO (ppm)
32
Cornwall graph for O3
6
Cornwall graph for PM2.5
1.5
Cornwall graph for NO2
    
32
Ottawa Downtown graph for O3
8
Ottawa Downtown graph for PM2.5
2.9
Ottawa Downtown graph for NO2
.1
Ottawa Downtown graph for SO2
.16
Ottawa Downtown graph for CO
32
Kingston graph for O3
4
Kingston graph for PM2.5
1.6
Kingston graph for NO2
    
37
Belleville graph for O3
3
Belleville graph for PM2.5
1.3
Belleville graph for NO2
    
32
Petawawa graph for O3
3
Petawawa graph for PM2.5
      
41
Peterborough graph for O3
3
Peterborough graph for PM2.5
.8
Peterborough graph for NO2
    
38
Oshawa graph for O3
8
Oshawa graph for PM2.5
2.6
Oshawa graph for NO2
    
43
Dorset graph for O3
4
Dorset graph for PM2.5
      
43
St. Catharines graph for O3
4
St. Catharines graph for PM2.5
2
St. Catharines graph for NO2
    
32
Toronto East graph for O3
12
Toronto East graph for PM2.5
5.6
Toronto East graph for NO2
    
40
Toronto Downtown graph for O3
6
Toronto Downtown graph for PM2.5
3.3
Toronto Downtown graph for NO2
    
33
North Bay graph for O3
2
North Bay graph for PM2.5
.9
North Bay graph for NO2
    
34
Toronto North graph for O3
9
Toronto North graph for PM2.5
5
Toronto North graph for NO2
.1
Toronto North graph for SO2
  
36
Newmarket graph for O3
7
Newmarket graph for PM2.5
3
Newmarket graph for NO2
    
37
Toronto West graph for O3
6
Toronto West graph for PM2.5
3.3
Toronto West graph for NO2
.4
Toronto West graph for SO2
.17
Toronto West graph for CO
34
Mississauga graph for O3
20
Mississauga graph for PM2.5
5.1
Mississauga graph for NO2
    
41
Oakville graph for O3
7
Oakville graph for PM2.5
.7
Oakville graph for NO2
    
38
Barrie graph for O3
6
Barrie graph for PM2.5
1.9
Barrie graph for NO2
    
41
Brampton graph for O3
8
Brampton graph for PM2.5
1.4
Brampton graph for NO2
    
40
Burlington graph for O3
5
Burlington graph for PM2.5
5.9
Burlington graph for NO2
    
42
Hamilton Downtown graph for O3
8
Hamilton Downtown graph for PM2.5
3.2
Hamilton Downtown graph for NO2
.2
Hamilton Downtown graph for SO2
.16
Hamilton Downtown graph for CO
37
Milton graph for O3
14
Milton graph for PM2.5
5.6
Milton graph for NO2
N/A
Milton graph for SO2
  
41
Hamilton Mountain graph for O3
8
Hamilton Mountain graph for PM2.5
1.5
Hamilton Mountain graph for NO2
.2
Hamilton Mountain graph for SO2
  
35
Hamilton West graph for O3
8
Hamilton West graph for PM2.5
7.8
Hamilton West graph for NO2
    
40
Parry Sound graph for O3
4
Parry Sound graph for PM2.5
.8
Parry Sound graph for NO2
    
41
Guelph graph for O3
12
Guelph graph for PM2.5
4
Guelph graph for NO2
    
41
Brantford graph for O3
14
Brantford graph for PM2.5
2.2
Brantford graph for NO2
    
44
Kitchener graph for O3
5
Kitchener graph for PM2.5
1.1
Kitchener graph for NO2
    
29
Sudbury graph for O3
4
Sudbury graph for PM2.5
2.2
Sudbury graph for NO2
4.1
Sudbury graph for SO2
  
34
Port Stanley graph for O3
13
Port Stanley graph for PM2.5
3.2
Port Stanley graph for NO2
    
43
London graph for O3
4
London graph for PM2.5
1.1
London graph for NO2
    
32
Tiverton graph for O3
3
Tiverton graph for PM2.5
      
42
Grand Bend graph for O3
1
Grand Bend graph for PM2.5
1.1
Grand Bend graph for NO2
    
46
Chatham graph for O3
0
Chatham graph for PM2.5
1.4
Chatham graph for NO2
    
43
Sarnia graph for O3
5
Sarnia graph for PM2.5
1.3
Sarnia graph for NO2
.3
Sarnia graph for SO2
  
45
Windsor Downtown graph for O3
2
Windsor Downtown graph for PM2.5
2.7
Windsor Downtown graph for NO2
0
Windsor Downtown graph for SO2
.15
Windsor Downtown graph for CO
41
Windsor West graph for O3
0
Windsor West graph for PM2.5
.9
Windsor West graph for NO2
.1
Windsor West graph for SO2
  
45
Sault Ste. Marie graph for O3
2
Sault Ste. Marie graph for PM2.5
1.4
Sault Ste. Marie graph for NO2
.4
Sault Ste. Marie graph for SO2
  
41
Thunder Bay graph for O3
6
Thunder Bay graph for PM2.5
1.6
Thunder Bay graph for NO2
    

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Note: 
Ontario 1-hour AAQC for O3 = 80 ppb
Ontario 1-hour AAQC for NO2 = 200 ppb
Ontario 1-hour AAQC for SO2 = 40 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.

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