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Air quality in St. Catharines

Air quality index (AQI) and PM2.5 air pollution in St. Catharines

Last update at 22:00, Apr 19 (local time)

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#	city	US AQI
1	Terrace, British Columbia	45
2	Chetwynd, British Columbia	43
3	Patricia Mcinnes, Alberta	43
4	Calgary, Alberta	42
5	Kitimat, British Columbia	42
6	Lac La Biche, Alberta	42
7	Fort St John, British Columbia	41
8	Richmond, British Columbia	40
9	Abbotsford, British Columbia	39
10	Cold Lake, Alberta	39

22:00, Apr 19 (local time)

#	station	US AQI
1	St. Catharines Station	34

22:00, Apr 19 (local time)

US AQI

live AQI index
Good

Air pollution level	Air quality index	Main pollutant
Good	34 US AQI	O3

Pollutants		Concentration
PM2.5		4µg/m³
O3		84µg/m³

✓

PM2.5 concentration in St. Catharines air currently meets the WHO annual air quality guideline value

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Day	Pollution level	Weather	Temperature	Wind
Tuesday, Apr 16	Good 28 AQI US		53.6° 42.8°	20.1 mp/h
Wednesday, Apr 17	Good 30 AQI US		51.8° 46.4°	11.2 mp/h
Thursday, Apr 18	Good 25 AQI US		51.8° 44.6°	15.7 mp/h
Today	Good 34 AQI US		46.4° 39.2°	17.9 mp/h
Saturday, Apr 20	Good 6 AQI US		48.2° 35.6°	15.7 mp/h
Sunday, Apr 21	Good 14 AQI US		50° 35.6°	15.7 mp/h
Monday, Apr 22	Good 26 AQI US	100%	50° 46.4°	22.4 mp/h
Tuesday, Apr 23	Good 22 AQI US	90%	46.4° 32°	26.8 mp/h
Wednesday, Apr 24	Good 5 AQI US	60%	42.8° 32°	26.8 mp/h
Thursday, Apr 25	Good 6 AQI US		50° 33.8°	8.9 mp/h