What is the air quality trend in South Valley?

Over the past 21 days, South Valley had an average AQI of 28 based on station measurements. The worst day was 2026-05-25 with AQI 41.

How is South Valley air quality measured?

Air quality in South Valley 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 South Valley, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

471h

PM2.5 Station

471h · 6 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-06-09	29	28–29	6.8 µg/m³	7h	6
2026-06-08	31	25–35	7.4 µg/m³	24h	6
2026-06-07	25	23–28	6.1 µg/m³	24h	6
2026-06-06	25	23–28	6.0 µg/m³	23h	6
2026-06-05	35	22–66	9.0 µg/m³	24h	6
2026-06-04	23	20–28	5.4 µg/m³	24h	6
2026-06-03	22	20–28	5.3 µg/m³	24h	6
2026-06-02	28	20–38	6.7 µg/m³	24h	6
2026-06-01	25	20–32	6.1 µg/m³	21h	6
2026-05-31	28	20–49	6.7 µg/m³	24h	6
2026-05-30	28	20–43	6.7 µg/m³	24h	6
2026-05-29	25	19–28	5.9 µg/m³	24h	6
2026-05-28	26	23–28	6.1 µg/m³	22h	6
2026-05-27	25	21–30	6.1 µg/m³	24h	6
2026-05-26	21	16–26	5.0 µg/m³	24h	6
2026-05-25	41	21–69	10.2 µg/m³	24h	6
2026-05-24	35	25–47	8.3 µg/m³	24h	6
2026-05-23	32	24–39	7.6 µg/m³	24h	6
2026-05-22	30	24–35	7.1 µg/m³	23h	6
2026-05-21	37	25–52	8.9 µg/m³	24h	6
2026-05-20	36	28–41	8.6 µg/m³	15h	6

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