What is the air quality trend in Pasco?

Over the past 8 days, Pasco had an average AQI of 41 based on station measurements. The worst day was 2026-07-21 with AQI 99.

How is Pasco air quality measured?

Air quality in Pasco 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 Pasco, United States

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

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

102

Current AQI
Unhealthy for sensitive groups Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

162h

PM2.5 Station

162h · 4 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	99	73–154	34.5 µg/m³	21h	3
2026-07-20	46	15–106	12.7 µg/m³	24h	3
2026-07-19	19	8–49	4.5 µg/m³	24h	4
2026-07-18	26	7–53	6.1 µg/m³	24h	4
2026-07-17	63	14–170	20.5 µg/m³	24h	3
2026-07-16	30	17–61	7.4 µg/m³	20h	3
2026-07-15	25	16–33	6.0 µg/m³	24h	4
2026-07-14	24	24–24	5.8 µg/m³	1h	4

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