Pollutant Concentrations for May 17, 2024, 1:00 am EDT

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Air Pollutant 1-Hour Concentrations For May 17, 2024, 1:00 am EDT
Station O3 (ppb) PM2.5 (µg/m3) NO2 (ppb) SO2 (ppb) CO (ppm)
27
Thunder Bay graph for O3
4
Thunder Bay graph for PM2.5
7.9
Thunder Bay graph for NO2
   
22
Sault Ste. Marie graph for O3
7
Sault Ste. Marie graph for PM2.5
1
Sault Ste. Marie graph for NO2
0
Sault Ste. Marie graph for SO2
 
38
Windsor West graph for O3
8
Windsor West graph for PM2.5
1.7
Windsor West graph for NO2
0
Windsor West graph for SO2
 
33
Windsor Downtown graph for O3
8
Windsor Downtown graph for PM2.5
7.5
Windsor Downtown graph for NO2
0
Windsor Downtown graph for SO2
0.2
Windsor Downtown graph for CO
32
Sarnia graph for O3
9
Sarnia graph for PM2.5
8.5
Sarnia graph for NO2
0.4
Sarnia graph for SO2
 
36
Chatham graph for O3
5
Chatham graph for PM2.5
3.2
Chatham graph for NO2
   
31
Grand Bend graph for O3
12
Grand Bend graph for PM2.5
2.3
Grand Bend graph for NO2
   
27
Tiverton graph for O3
13
Tiverton graph for PM2.5
     
15
London graph for O3
13
London graph for PM2.5
5.9
London graph for NO2
   
28
Port Stanley graph for O3
12
Port Stanley graph for PM2.5
2
Port Stanley graph for NO2
   
9
Sudbury graph for O3
16
Sudbury graph for PM2.5
19.6
Sudbury graph for NO2
0.4
Sudbury graph for SO2
 
22
Kitchener graph for O3
5
Kitchener graph for PM2.5
8.8
Kitchener graph for NO2
   
11
Brantford graph for O3
19
Brantford graph for PM2.5
10.6
Brantford graph for NO2
   
13
Guelph graph for O3
8
Guelph graph for PM2.5
6.7
Guelph graph for NO2
   
25
Parry Sound graph for O3
12
Parry Sound graph for PM2.5
3.8
Parry Sound graph for NO2
   
6
Hamilton West graph for O3
17
Hamilton West graph for PM2.5
22.2
Hamilton West graph for NO2
   
13
Hamilton Mountain graph for O3
25
Hamilton Mountain graph for PM2.5
15
Hamilton Mountain graph for NO2
2
Hamilton Mountain graph for SO2
 
24
Milton graph for O3
13
Milton graph for PM2.5
12
Milton graph for NO2
0.2
Milton graph for SO2
 
16
Hamilton Downtown graph for O3
20
Hamilton Downtown graph for PM2.5
18.5
Hamilton Downtown graph for NO2
2.4
Hamilton Downtown graph for SO2
0.32
Hamilton Downtown graph for CO
11
Burlington graph for O3
18
Burlington graph for PM2.5
25.2
Burlington graph for NO2
   
8
Brampton graph for O3
7
Brampton graph for PM2.5
24.3
Brampton graph for NO2
   
21
Barrie graph for O3
6
Barrie graph for PM2.5
4.9
Barrie graph for NO2
   
26
Oakville graph for O3
11
Oakville graph for PM2.5
8.1
Oakville graph for NO2
   
6
Mississauga graph for O3
13
Mississauga graph for PM2.5
10.1
Mississauga graph for NO2
   
15
Toronto West graph for O3
7
Toronto West graph for PM2.5
18
Toronto West graph for NO2
0
Toronto West graph for SO2
0.22
Toronto West graph for CO
23
Newmarket graph for O3
5
Newmarket graph for PM2.5
7.5
Newmarket graph for NO2
   
21
Toronto North graph for O3
4
Toronto North graph for PM2.5
6.2
Toronto North graph for NO2
0
Toronto North graph for SO2
 
17
North Bay graph for O3
8
North Bay graph for PM2.5
7.2
North Bay graph for NO2
   
9
Toronto Downtown graph for O3
7
Toronto Downtown graph for PM2.5
36.8
Toronto Downtown graph for NO2
   
27
Toronto East graph for O3
4
Toronto East graph for PM2.5
9.2
Toronto East graph for NO2
   
22
St. Catharines graph for O3
15
St. Catharines graph for PM2.5
6.9
St. Catharines graph for NO2
   
16
Dorset graph for O3
9
Dorset graph for PM2.5
     
5
Oshawa graph for O3
6
Oshawa graph for PM2.5
6.2
Oshawa graph for NO2
   
14
Peterborough graph for O3
9
Peterborough graph for PM2.5
6
Peterborough graph for NO2
   
21
Belleville graph for O3
6
Belleville graph for PM2.5
7.6
Belleville graph for NO2
   
34
Kingston graph for O3
6
Kingston graph for PM2.5
1.7
Kingston graph for NO2
   
29
Ottawa Downtown graph for O3
10
Ottawa Downtown graph for PM2.5
5.4
Ottawa Downtown graph for NO2
   
24
Cornwall graph for O3
8
Cornwall graph for PM2.5
3.6
Cornwall 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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