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Air quality in Portola Valley

Air quality index (AQI) and PM2.5 air pollution in Portola Valley

Last update at 15:00, May 17 (local time)

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#	city	US AQI
1	Thibodaux, Louisiana	111
2	San Bernardino, California	90
3	Hammond, Indiana	86
4	Yucaipa, California	85
5	Burns Harbor, Indiana	80
6	Indio, California	80
7	Redlands, California	80
8	La Crescenta-Montrose, California	78
9	Fontana, California	77
10	Altadena, California	76

15:00, May 17 (local time)

#	station	US AQI
1	Lower Sandstone	65
2	Antonio Court	52
3	4139 Alpine Road	23
4	14 Arastradero	21
5	LSAC Building 950	21
6	Ladera - Lucero and Mimosa	21
7	Alhambra Court	18
8	Experimental Facilities Dept Shops EFD	18
9	9 Valley Oak Street	17
10	San Francisquito Creek Road	17

15:00, May 17 (local time)

US AQI

live AQI index
Good

Air pollution level	Air quality index	Main pollutant
Good	15 US AQI	PM2.5

Pollutants		Concentration
PM2.5		2.7µg/m³

✓

PM2.5 concentration in Portola Valley air currently meets the WHO annual air quality guideline value

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Day	Pollution level	Weather	Temperature	Wind
Tuesday, May 14	Good 28 AQI US		71.6° 48.2°	6.7 mp/h
Wednesday, May 15	Good 18 AQI US		69.8° 50°	6.7 mp/h
Thursday, May 16	Good 9 AQI US		69.8° 50°	6.7 mp/h
Today	Good 15 AQI US		69.8° 50°	6.7 mp/h
Saturday, May 18	Good 21 AQI US		66.2° 48.2°	8.9 mp/h
Sunday, May 19	Good 38 AQI US		62.6° 46.4°	8.9 mp/h
Monday, May 20	Good 39 AQI US		64.4° 46.4°	6.7 mp/h
Tuesday, May 21	Good 40 AQI US		68° 48.2°	8.9 mp/h
Wednesday, May 22	Good 41 AQI US	30%	57.2° 46.4°	11.2 mp/h
Thursday, May 23	Good 21 AQI US		57.2° 48.2°	13.4 mp/h
Friday, May 24	Good 18 AQI US		59° 48.2°	8.9 mp/h