SmogRank / Malawi / Central Region / Lilongwe

Lilongwe, month by month

Lilongwe has a measured daily mean on 276 days since 10 October 2025. Its worst month was September 2026, at 158 US AQI (65.3 µg/m³), 7th of 2,981 cities on that month's world ranking. Its cleanest was December 2025, at 64 US AQI (15.9 µg/m³).

Every month since 2025

2026131 so far212 days measured51st of 2,791 in the world

Jan79#268Feb6 daysMarnoneApr83#279 May113#100 Jun153#26 Jul156#13 Aug152#9 Sep158#7 Oct127#17

2025too few days for a mean (a year needs 256)64 days measured

JanFebMarAprMayJunJulAugSepOct137#79Nov12 daysDec64#688

Each square is a month's mean PM2.5 in US AQI from Lilongwe's measured days, with its place on that month's world ranking under it. A month has a mean once 70% of its days are measured, the rule the monthly rankings use; under that, the square gives the days measured. Each square opens that month's ranking with Lilongwe marked; each year, the year's. A dashed square is the running month, so far.

Good0–50

Moderate51–100

Sensitive groups101–150

Unhealthy151–200

Very unhealthy201–300

Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Months without a mean, and why

3 months

Month	Why
Mar 2026	No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Feb 2026	6 of 28 days measured; a month needs 20. The others: 22 with under 18 hours of readings or readings that failed our checks.
Nov 2025	12 of 30 days measured; a month needs 21. The others: 18 with under 18 hours of readings or readings that failed our checks.

A day counts once 18 hours of it are measured; a month needs 70% of its days.

Lilongwe's worst months

Month	US AQI	Days measured	World rank
September 2026	15865.3 µg/m³	30 of 30	7thof 2,981
July 2026	15663.1 µg/m³	31 of 31	13thof 2,784
June 2026	15358.6 µg/m³	27 of 30	26thof 2,497
August 2026	15256.8 µg/m³	27 of 31	9thof 2,896
October 2025	13750.3 µg/m³	22 of 31	79thof 2,614
May 2026	11340.5 µg/m³	30 of 31	100thof 2,874

Monthly means over the days measured; finished months only. World rank: its place on that month's world ranking of every city with enough days. Each month opens that ranking.

Lilongwe's worst days

Day	US AQI
2 Sept 2026	193116.0 µg/m³
3 Sept 2026	182100.0 µg/m³
15 Sept 2026	17995.2 µg/m³
22 Sept 2026	17995.1 µg/m³
23 Sept 2026	17894.7 µg/m³
22 Jul 2026	17791.9 µg/m³
4 Jul 2026	17590.0 µg/m³
13 Jun 2026	17489.0 µg/m³
18 Oct 2025	17487.9 µg/m³
19 Jun 2026	17487.6 µg/m³

Daily means, the highest since 10 Oct 2025; the WHO's daily guideline is 15 µg/m³. Each date opens that day's world ranking, and each episode the bad-air spell it was part of.

Use this history

SmogRank, PM2.5 monthly and daily means, Lilongwe, Malawi, 10 Oct 2025 – 11 Oct 2026. Monitor data from AirGradient via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/mw/lilongwe/history (accessed 12 Oct 2026).

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.

Lilongwe now: the last 24 hours, its ranks today and the last 12 months day by day.

Updated 2026-10-12 20:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some low-cost readings: Sensor.Community, ODbL (data and licence). Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver), no reuse terms published (why we use them).