What is the air quality trend in Vallejo?

Over the past 7 days, Vallejo had an average AQI of 18 based on station measurements. The worst day was with AQI .

How is Vallejo air quality measured?

Air quality in Vallejo 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 Vallejo, United States

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

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

Current AQI
Good

48 Hours 7 Days 14 Days 20 Days

PM2.5 Trend

127h · 1 station

Daily Summary

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-04-12	13	2–15	3.0 µg/m³	12h	87
2026-04-11	11	11–12	2.7 µg/m³	24h	94
2026-04-10	13	12–13	3.1 µg/m³	24h	94
2026-04-09	17	13–19	4.0 µg/m³	16h	94
2026-04-08	23	13–25	5.6 µg/m³	9h	85
2026-04-07	24	21–27	5.8 µg/m³	24h	95
2026-04-06	26	20–32	6.3 µg/m³	18h	93

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