What is the air quality trend in Milpitas?

Over the past 15 days, Milpitas had an average AQI of 31 based on station measurements. The worst day was 2026-08-03 with AQI 46.

How is Milpitas air quality measured?

Air quality in Milpitas is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Milpitas, United States

Name: Milpitas Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Milpitas, United States.

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

334h

PM2.5 Station

334h · 105 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-08	35	34–37	8.4 µg/m³	5h	105
2026-08-07	34	23–44	8.2 µg/m³	24h	107
2026-08-06	34	28–58	8.3 µg/m³	24h	101
2026-08-05	36	32–40	8.7 µg/m³	24h	100
2026-08-04	41	33–48	9.7 µg/m³	24h	102
2026-08-03	46	36–62	11.0 µg/m³	24h	98
2026-08-02	34	30–39	8.2 µg/m³	24h	104
2026-08-01	31	26–40	7.4 µg/m³	24h	104
2026-07-31	38	30–59	9.2 µg/m³	24h	104
2026-07-30	31	27–33	7.4 µg/m³	24h	104
2026-07-29	23	20–27	5.6 µg/m³	24h	103
2026-07-28	29	25–53	7.1 µg/m³	24h	104
2026-07-27	20	17–25	4.7 µg/m³	24h	115
2026-07-26	19	17–25	4.6 µg/m³	24h	114
2026-07-25	27	25–30	6.6 µg/m³	17h	113

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