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Air quality in Saint Charles

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

Last update at 17:00, Jun 1 (local time)

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#	city	US AQI
1	San Antonio, Texas	97
2	Baytown, Texas	81
3	Boerne, Texas	81
4	New Braunfels, Texas	81
5	Pahrump, Nevada	80
6	Fontana, California	79
7	San Fernando, California	78
8	San Bernardino, California	76
9	La Crescenta-Montrose, California	74
10	Rancho Cucamonga, California	73

17:00, Jun 1 (local time)

#	station	US AQI
1	Orchard Farm	30
2	Cottleville Weldon Spring	20

17:00, Jun 1 (local time)

US AQI

live AQI index
Good

Air pollution level	Air quality index	Main pollutant
Good	31 US AQI	O3

Pollutants		Concentration
PM2.5		2.7µg/m³
O3		76µg/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
Wednesday, May 29	Good 39 AQI US		78.8° 55.4°	8.9 mp/h
Thursday, May 30	Good 35 AQI US		77° 60.8°	11.2 mp/h
Friday, May 31	Good 30 AQI US		75.2° 64.4°	8.9 mp/h
Today	Good 31 AQI US	100%	75.2° 64.4°	8.9 mp/h
Sunday, Jun 2	Moderate 56 AQI US		80.6° 60.8°	6.7 mp/h
Monday, Jun 3	Moderate 63 AQI US	100%	86° 66.2°	15.7 mp/h
Tuesday, Jun 4	Moderate 58 AQI US	70%	86° 64.4°	11.2 mp/h
Wednesday, Jun 5	Good 49 AQI US	100%	80.6° 68°	17.9 mp/h
Thursday, Jun 6	Good 36 AQI US		77° 62.6°	11.2 mp/h
Friday, Jun 7	Good 15 AQI US		80.6° 57.2°	6.7 mp/h
Saturday, Jun 8	Good 25 AQI US		69.8° 59°	13.4 mp/h