SmogRank / United States / Vermont / Burlington

Burlington, month by month

Burlington, Vermont has a measured daily mean on 458 days since 1 January 2023. Its worst month was June 2023, at 60 US AQI (14.1 µg/m³), 433rd of 1,603 cities on that month's world ranking. Its cleanest was September 2026, at 23 US AQI (4.1 µg/m³).

Every month since 2023

2026too few days for a mean (a year needs 199)80 days measured
JannoneFebnoneMarnoneAprnoneMaynoneJunnoneJul11 daysAug27#2,780Sep23#2,711Oct15#2,730
2025too few days for a mean (a year needs 256)0 days measured
JannoneFebnoneMarnoneAprnoneMaynoneJunnoneJulnoneAugnoneSepnoneOctnoneNovnoneDecnone
2024too few days for a mean (a year needs 257)35 days measured
Jan35#1,737Feb4 daysMarnoneAprnoneMaynoneJunnoneJulnoneAugnoneSepnoneOctnoneNovnoneDecnone
202344 for the year343 days measured897th of 1,355 in the world
Jan37#903Feb40#910Mar35#699Apr34#1,192May36#1,224Jun60#433Jul59#239Aug21 daysSep49#838Oct31#1,615Nov31#1,835Dec42#1,368
Each square is a month's mean PM2.5 in US AQI from Burlington'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 Burlington 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

31 months
MonthWhy
Jul 202611 of 31 days measured; a month needs 22. The others: 20 with under 18 hours of readings or readings that failed our checks.
Jun 2026No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
May 2026No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Apr 2026No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Mar 2026No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Feb 2026No day measured. The others: 28 with under 18 hours of readings or readings that failed our checks.
Jan 2026No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Dec 2025No day measured.
Nov 2025No day measured.
Oct 2025No day measured.
Sep 2025No day measured.
Aug 2025No day measured.
Jul 2025No day measured.
Jun 2025No day measured.
May 2025No day measured.
Apr 2025No day measured.
Mar 2025No day measured.
Feb 2025No day measured.
Jan 2025No day measured.
Dec 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Nov 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Oct 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Sep 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Aug 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jul 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jun 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
May 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Apr 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Mar 2024No day measured. The others: 1 missing from OpenAQ's archive, 30 with under 18 hours of readings or readings that failed our checks.
Feb 20244 of 29 days measured; a month needs 21. The others: 25 with under 18 hours of readings or readings that failed our checks.
Aug 202321 of 31 days measured; a month needs 22. The others: 10 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.

Burlington's worst months

MonthUS AQIDays measuredWorld rankEpisode
June 2023 6014.1 µg/m³29 of 30433rdof 1,603Eastern United States and Canada, June and July 2023
Eastern United States and Canada, May and June 2023
July 2023 5913.5 µg/m³27 of 31239thof 1,432United States and Canada, July 2023
Eastern United States and Canada, June and July 2023
September 2023 498.8 µg/m³30 of 30838thof 2,176–
December 2023 427.6 µg/m³31 of 311,368thof 2,247–
February 2023 407.2 µg/m³26 of 28910thof 1,129–
January 2023 376.6 µg/m³31 of 31903rdof 1,261–

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.

Burlington's worst days

DayUS AQIEpisode
25 Jun 2023 15561.7 µg/m³Eastern United States and Canada, June and July 2023
26 Jun 2023 15256.6 µg/m³Eastern United States and Canada, June and July 2023
1 Jul 2023 15256.6 µg/m³Eastern United States and Canada, June and July 2023
18 Jul 2023 11741.9 µg/m³United States and Canada, July 2023
6 Jun 2023 10236.0 µg/m³Eastern United States and Canada, May and June 2023
17 Jul 2023 9231.0 µg/m³United States and Canada, July 2023
2 Jul 2023 8426.6 µg/m³Eastern United States and Canada, June and July 2023
30 Jun 2023 7723.2 µg/m³Eastern United States and Canada, June and July 2023
30 Sept 2023 7723.0 µg/m³–
1 Oct 2023 7421.3 µg/m³–

Daily means, the highest since 1 Jan 2023; 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, Burlington, Vermont, United States, 1 Jan 2023 – 11 Oct 2026. Monitor data from AirNow, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/us/burlington-vermont/history (accessed 12 Oct 2026).

Download chart (PNG)

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.

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

Updated 2026-10-12 22:07 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).