What is the air quality trend in Porterville?

Over the past 12 days, Porterville had an average AQI of 34 based on station measurements. The worst day was with AQI .

How is Porterville air quality measured?

Air quality in Porterville 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 Porterville, United States

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

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

Current AQI
Good

48 Hours 7 Days 14 Days 20 Days

PM2.5 Trend

210h · 2 stations

Daily Summary

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-04-11	13	10–22	3.2 µg/m³	11h	2
2026-04-10	19	14–26	4.5 µg/m³	24h	2
2026-04-09	40	21–51	9.5 µg/m³	16h	2
2026-04-08	24	23–29	5.9 µg/m³	8h	2
2026-04-07	26	15–38	6.1 µg/m³	24h	2
2026-04-06	48	23–56	11.8 µg/m³	18h	2
2026-04-04	29	23–35	7.1 µg/m³	14h	2
2026-04-03	25	17–39	6.0 µg/m³	24h	2
2026-04-02	18	13–23	4.4 µg/m³	21h	2
2026-04-01	49	21–63	12.6 µg/m³	21h	2
2026-03-31	58	29–69	16.1 µg/m³	21h	2
2026-03-30	68	56–72	19.9 µg/m³	8h	2

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