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Air quality in Saint Charles

Air quality index (AQI) and PM2.5 air pollution in Saint Charles

Last update at 23:00, Apr 18 (local time)

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#	city	US AQI
1	Sequoia National Park, California	80
2	Anchorage, Alaska	77
3	Three Rivers, California	77
4	Fairbanks, Alaska	75
5	Pahrump, Nevada	74
6	Springville, California	72
7	Casa Grande, Arizona	66
8	Porterville, California	65
9	Boerne, Texas	63
10	Middletown, Ohio	61

23:00, Apr 18 (local time)

#	station	US AQI
1	Orchard Farm	27
2	Cottleville Weldon Spring	8

23:00, Apr 18 (local time)

US AQI

live AQI index
Good

Air pollution level	Air quality index	Main pollutant
Good	28 US AQI	O3

Pollutants		Concentration
PM2.5		4.2µg/m³
O3		68µg/m³

✓

PM2.5 concentration in Saint Charles air currently meets the WHO annual air quality guideline value

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Day	Pollution level	Weather	Temperature	Wind
Tuesday, Apr 16	Good 33 AQI US		77° 59°	20.1 mp/h
Wednesday, Apr 17	Good 31 AQI US		78.8° 51.8°	17.9 mp/h
Today	Good 28 AQI US
Friday, Apr 19	Good 21 AQI US		59° 42.8°	13.4 mp/h
Saturday, Apr 20	Good 9 AQI US		55.4° 41°	13.4 mp/h
Sunday, Apr 21	Good 5 AQI US		59° 39.2°	8.9 mp/h
Monday, Apr 22	Good 12 AQI US		66.2° 42.8°	8.9 mp/h
Tuesday, Apr 23	Good 15 AQI US	90%	68° 46.4°	15.7 mp/h
Wednesday, Apr 24	Good 23 AQI US		53.6° 37.4°	13.4 mp/h
Thursday, Apr 25	Good 8 AQI US		62.6° 41°	8.9 mp/h