What is the air quality trend in Vientiane?

Over the past 21 days, Vientiane had an average AQI of 49 based on station measurements. The worst day was 2026-08-24 with AQI 72.

How is Vientiane air quality measured?

Air quality in Vientiane 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 Vientiane, Lao People's Democratic Republic

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

Historical PM2.5 and AQI trend from monitoring stations near Vientiane, Lao People's Democratic Republic.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

406h

PM2.5 Station

406h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-05	57	53–65	14.9 µg/m³	13h	1
2026-09-04	55	52–60	14.2 µg/m³	21h	1
2026-09-03	57	38–80	15.4 µg/m³	17h	1
2026-09-02	53	44–68	13.5 µg/m³	19h	1
2026-09-01	44	31–60	10.8 µg/m³	21h	1
2026-08-31	52	42–57	12.7 µg/m³	19h	1
2026-08-30	56	51–63	14.3 µg/m³	22h	1
2026-08-29	58	52–66	15.5 µg/m³	18h	1
2026-08-28	58	45–97	15.4 µg/m³	23h	1
2026-08-27	52	43–63	13.0 µg/m³	17h	1
2026-08-26	50	41–57	12.4 µg/m³	24h	1
2026-08-25	58	48–71	15.6 µg/m³	19h	1
2026-08-24	72	47–115	22.0 µg/m³	19h	1
2026-08-23	49	43–52	11.8 µg/m³	20h	1
2026-08-22	43	37–56	10.5 µg/m³	22h	1
2026-08-21	36	26–43	8.8 µg/m³	20h	1
2026-08-20	41	35–48	9.9 µg/m³	23h	1
2026-08-19	41	37–48	9.8 µg/m³	18h	1
2026-08-18	35	4–78	8.7 µg/m³	23h	1
2026-08-17	35	4–57	8.5 µg/m³	20h	1
2026-08-16	36	4–44	8.6 µg/m³	8h	1

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