St. Catharines: Hourly Nitrogen Dioxide 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
2025-04-20 1.6 1.4 1.4 1.7 1.4 1.7 2.4 3.1 2.9 1.6 1.7 1.4 1.1 1.1 1.6 1.4 1.2 0.8 0.8 0.9 1.6 2 2.6 3.7
2025-04-21 2.7 3.4 2.2 2.4 2.5 5 3.8 9.5 6.7 12.8 11.9 8.5 8.2 10.3 15.3 9.9 9.9 4.5 2.6 1.6 1.7 1.8 1.7
2025-04-22 5.2 3.5 2.2 2.4 2.1 1.4 1.6 3.8 4.8
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