SmogRank / United States / Virginia / Bristol

Bristol, month by month

Bristol, Virginia has a measured daily mean on 165 days since 30 April 2026. Its worst month was July 2026, at 44 US AQI (7.9 µg/m³), 1,912th of 2,784 cities on that month's world ranking. Its cleanest was September 2026, at 36 US AQI (6.4 µg/m³).

Every month since 2026

2026too few days for a mean (a year needs 200)165 days measured

JanFebMarApr1 dayMay37#1,737 Jun41#1,293 Jul44#1,912 Aug39#2,047 Sep36#1,543 Oct32#1,812

Each square is a month's mean PM2.5 in US AQI from Bristol'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 Bristol marked; each year, the year's. A dashed square is the running month, so far.

Good0–50

Moderate51–100

Unhealthy for 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

1 month

Month	Why
Apr 2026	1 of 30 days measured; a month needs 21.

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

Bristol's worst months

Month	US AQI	Days measured	World rank
July 2026	447.9 µg/m³	31 of 31	1,912thof 2,784
June 2026	417.4 µg/m³	30 of 30	1,293rdof 2,497
August 2026	397.1 µg/m³	31 of 31	2,047thof 2,896
May 2026	376.6 µg/m³	31 of 31	1,737thof 2,874
September 2026	366.4 µg/m³	29 of 30	1,543rdof 2,997

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.

Bristol's worst days

Day	US AQI
2 Jul 2026	7019.2 µg/m³
3 Jul 2026	6315.8 µg/m³
7 Jun 2026	6214.8 µg/m³
17 May 2026	6013.8 µg/m³
6 Jun 2026	6013.7 µg/m³
8 Jun 2026	5913.4 µg/m³
16 May 2026	5813.0 µg/m³
17 Jul 2026	5812.9 µg/m³
17 Jun 2026	5812.7 µg/m³
1 Aug 2026	5812.6 µg/m³

Daily means, the highest since 30 Apr 2026; 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, Bristol, Virginia, United States, 30 Apr 2026 – 12 Oct 2026. Monitor data from AirNow, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/us/bristol-virginia/history (accessed 13 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.

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

Updated 2026-10-13 04:07 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).