Pollutant Concentrations for March 23, 2023, 9:00 am EDT

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Air Pollutant 1-Hour Concentrations For March 23, 2023, 9:00 am EDT
Station O3 (ppb) PM2.5 (µg/m3) NO2 (ppb) SO2 (ppb) CO (ppm)
10
Barrie graph for O3
18
Barrie graph for PM2.5
17.4
Barrie graph for NO2
   
21
Belleville graph for O3
12
Belleville graph for PM2.5
6.4
Belleville graph for NO2
   
2
Brampton graph for O3
18
Brampton graph for PM2.5
33.2
Brampton graph for NO2
   
32
Brantford graph for O3
12
Brantford graph for PM2.5
3.6
Brantford graph for NO2
   
22
Burlington graph for O3
16
Burlington graph for PM2.5
9.9
Burlington graph for NO2
   
19
Chatham graph for O3
22
Chatham graph for PM2.5
9.4
Chatham graph for NO2
   
26
Cornwall graph for O3
7
Cornwall graph for PM2.5
11.1
Cornwall graph for NO2
   
24
Dorset graph for O3
7
Dorset graph for PM2.5
     
25
Grand Bend graph for O3
8
Grand Bend graph for PM2.5
3.4
Grand Bend graph for NO2
   
25
Guelph graph for O3
11
Guelph graph for PM2.5
10.2
Guelph graph for NO2
   
14
Hamilton Downtown graph for O3
13
Hamilton Downtown graph for PM2.5
16
Hamilton Downtown graph for NO2
.6
Hamilton Downtown graph for SO2
N/A
Hamilton Downtown graph for CO
25
Hamilton Mountain graph for O3
11
Hamilton Mountain graph for PM2.5
3.6
Hamilton Mountain graph for NO2
.5
Hamilton Mountain graph for SO2
 
27
Hamilton West graph for O3
10
Hamilton West graph for PM2.5
6.9
Hamilton West graph for NO2
   
33
Kingston graph for O3
8
Kingston graph for PM2.5
4
Kingston graph for NO2
   
27
Kitchener graph for O3
9
Kitchener graph for PM2.5
7.8
Kitchener graph for NO2
   
24
London graph for O3
14
London graph for PM2.5
8.4
London graph for NO2
   
22
Milton graph for O3
9
Milton graph for PM2.5
12.6
Milton graph for NO2
.2
Milton graph for SO2
 
4
Mississauga graph for O3
22
Mississauga graph for PM2.5
15.6
Mississauga graph for NO2
   
26
Newmarket graph for O3
10
Newmarket graph for PM2.5
7.5
Newmarket graph for NO2
   
26
North Bay graph for O3
6
North Bay graph for PM2.5
5.8
North Bay graph for NO2
   
12
Oakville graph for O3
20
Oakville graph for PM2.5
25.2
Oakville graph for NO2
   
21
Oshawa graph for O3
7
Oshawa graph for PM2.5
11
Oshawa graph for NO2
   
31
Ottawa Downtown graph for O3
6
Ottawa Downtown graph for PM2.5
8.9
Ottawa Downtown graph for NO2
.4
Ottawa Downtown graph for SO2
 
25
Parry Sound graph for O3
16
Parry Sound graph for PM2.5
2.2
Parry Sound graph for NO2
   
19
Peterborough graph for O3
11
Peterborough graph for PM2.5
12.4
Peterborough graph for NO2
   
32
Port Stanley graph for O3
9
Port Stanley graph for PM2.5
1.9
Port Stanley graph for NO2
   
16
Sarnia graph for O3
16
Sarnia graph for PM2.5
11.6
Sarnia graph for NO2
1
Sarnia graph for SO2
 
40
Sault Ste. Marie graph for O3
1
Sault Ste. Marie graph for PM2.5
3.3
Sault Ste. Marie graph for NO2
.5
Sault Ste. Marie graph for SO2
 
30
St. Catharines graph for O3
8
St. Catharines graph for PM2.5
5.3
St. Catharines graph for NO2
   
27
Sudbury graph for O3
12
Sudbury graph for PM2.5
5.1
Sudbury graph for NO2
.2
Sudbury graph for SO2
 
39
Thunder Bay graph for O3
3
Thunder Bay graph for PM2.5
5.6
Thunder Bay graph for NO2
   
26
Tiverton graph for O3
2
Tiverton graph for PM2.5
     
6
Toronto Downtown graph for O3
17
Toronto Downtown graph for PM2.5
26.1
Toronto Downtown graph for NO2
   
6
Toronto East graph for O3
25
Toronto East graph for PM2.5
30.8
Toronto East graph for NO2
   
3
Toronto North graph for O3
27
Toronto North graph for PM2.5
34.3
Toronto North graph for NO2
.2
Toronto North graph for SO2
 
2
Toronto West graph for O3
30
Toronto West graph for PM2.5
33.2
Toronto West graph for NO2
.4
Toronto West graph for SO2
.48
Toronto West graph for CO
10
Windsor Downtown graph for O3
24
Windsor Downtown graph for PM2.5
20.3
Windsor Downtown graph for NO2
0
Windsor Downtown graph for SO2
.35
Windsor Downtown graph for CO
9
Windsor West graph for O3
25
Windsor West graph for PM2.5
19.7
Windsor West graph for NO2
0
Windsor West graph for SO2
 

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 = 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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