What is the air quality trend in Orange?

Over the past 14 days, Orange had an average AQI of 40 based on station measurements. The worst day was 2026-10-07 with AQI 71.

How is Orange air quality measured?

Air quality in Orange 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 Orange, United States

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

297h

PM2.5 Station

297h · 3 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-20	42	18–149	11.5 µg/m³	19h	2
2026-10-19	35	15–69	9.1 µg/m³	19h	2
2026-10-18	31	5–73	7.7 µg/m³	22h	2
2026-10-17	31	14–57	7.5 µg/m³	19h	2
2026-10-16	44	2–245	17.6 µg/m³	21h	2
2026-10-15	33	13–70	8.3 µg/m³	22h	2
2026-10-14	28	13–52	6.6 µg/m³	17h	2
2026-10-13	35	12–68	8.7 µg/m³	22h	2
2026-10-12	28	8–77	7.1 µg/m³	21h	2
2026-10-11	35	8–92	9.3 µg/m³	23h	2
2026-10-10	43	7–212	16.7 µg/m³	21h	2
2026-10-09	44	13–97	12.0 µg/m³	23h	2
2026-10-08	66	15–140	20.0 µg/m³	24h	3
2026-10-07	71	28–143	21.8 µg/m³	24h	3

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