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Pollutants
Select Pollutant
Ozone (O3)
Fine Particulate Matter (PM2.5)
Nitrogen Dioxide (NO2)
Carbon Monoxide (CO)
Sulphur Dioxide (SO2)
Day
1
2
3
4
5
6
7
8
9
10
11
12
13
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20
21
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Chart
Table
Ottawa Downtown: Hourly Fine Particulate Matter Readings
Pollutant data for this station for a three-day period.
Date
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
2024-10-11
3
3
3
2
2
2
2
2
2
2
2
2
3
3
3
2
3
3
3
4
4
5
5
6
2024-10-12
6
5
6
4
1
0
1
2024-10-13
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