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Air quality in San Marcos

Air quality index (AQI) and PM2.5 air pollution in San Marcos

Last update at 01:00, May 20 (local time)

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#	city	US AQI
1	Palm Desert, California	96
2	Canton, Ohio	93
3	Maricopa, Arizona	88
4	Mecca, California	81
5	Pahrump, Nevada	79
6	Casa Grande, Arizona	71
7	Thermal, California	71
8	San Antonio, Texas	69
9	Elizabethtown, Pennsylvania	67
10	New Braunfels, Texas	65

01:00, May 20 (local time)

01:00, May 20 (local time)

US AQI

live AQI index
Good

Air pollution level	Air quality index	Main pollutant
Good	3 US AQI	PM2.5

Pollutants		Concentration
PM2.5		0.5µg/m³

✓

PM2.5 concentration in San Marcos air currently meets the WHO annual air quality guideline value

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Day	Pollution level	Weather	Temperature	Wind
Friday, May 17	Good 10 AQI US		68° 55.4°	11.2 mp/h
Saturday, May 18	Good 11 AQI US		66.2° 55.4°	11.2 mp/h
Sunday, May 19	Good 7 AQI US		66.2° 51.8°	11.2 mp/h
Today	Good 3 AQI US		66.2° 51.8°	11.2 mp/h
Tuesday, May 21	Good 30 AQI US		68° 53.6°	8.9 mp/h
Wednesday, May 22	Good 30 AQI US		69.8° 53.6°	11.2 mp/h
Thursday, May 23	Good 33 AQI US	20%	66.2° 55.4°	11.2 mp/h
Friday, May 24	Moderate 59 AQI US	20%	64.4° 57.2°	13.4 mp/h
Saturday, May 25	Good 28 AQI US	30%	64.4° 55.4°	13.4 mp/h
Sunday, May 26	Good 38 AQI US		68° 55.4°	8.9 mp/h