What is the air quality trend in Helin?

Over the past 15 days, Helin had an average AQI of 60 based on station measurements. The worst day was 2026-05-30 with AQI 84.

How is Helin air quality measured?

Air quality in Helin 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 Helin, China

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

Historical PM2.5 and AQI trend from monitoring stations near Helin, China.

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

91h

PM2.5 Station

91h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	84	61–107	27.4 µg/m³	2h	1
2026-05-29	70	38–95	21.7 µg/m³	5h	1
2026-05-28	49	18–61	12.5 µg/m³	6h	1
2026-05-27	58	46–85	15.7 µg/m³	5h	1
2026-05-26	49	21–72	12.8 µg/m³	10h	1
2026-05-25	61	25–97	18.6 µg/m³	8h	1
2026-05-24	54	42–85	14.7 µg/m³	6h	1
2026-05-23	74	11–122	24.4 µg/m³	6h	1
2026-05-22	74	24–147	23.6 µg/m³	11h	1
2026-05-21	47	16–76	13.4 µg/m³	6h	1
2026-05-20	75	65–95	23.6 µg/m³	4h	1
2026-05-19	50	34–65	12.8 µg/m³	6h	1
2026-05-18	58	38–72	16.2 µg/m³	6h	1
2026-05-17	47	27–63	12.5 µg/m³	5h	1
2026-05-16	58	46–82	16.0 µg/m³	5h	1

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