SmogRank / United States / Nevada / Mesquite

Mesquite, month by month

Mesquite, Nevada has a measured daily mean on 1,365 days since 1 January 2023. Its worst month was September 2024, at 47 US AQI (8.5 µg/m³), 704th of 2,010 cities on that month's world ranking. Its cleanest was February 2024, at 10 US AQI (1.8 µg/m³). 2025 averaged 21 US AQI (3.7 µg/m³), against 22 US AQI (3.9 µg/m³) in 2024.

Every month since 2023

202622 so far284 days measured2,750th of 2,791 in the world
Jan15#2,589Feb16#2,822Mar22#2,823Apr14#2,914May25#2,508Jun24#2,257Jul28#2,581Aug33#2,509Sep16#2,926Oct17#2,649
202521 for the year356 days measured2,656th of 2,681 in the world
Jan21#2,396Feb17#2,601Mar16#2,815Apr19#2,857May21#2,645Jun29#2,267Jul27#2,652Aug29#2,649Sep17#3,051Oct14#2,591Nov19#2,630Dec17#2,944
202422 for the year363 days measured2,054th of 2,097 in the world
Jan14#2,368Feb10#2,478Mar13#1,679Apr15#2,464May19#2,518Jun26#2,282Jul34#1,948Aug24#1,943Sep47#704Oct22#1,934Nov17#2,571Dec21#2,480
202321 for the year362 days measured1,335th of 1,355 in the world
Jan12#1,250Feb14#1,124Mar14#905Apr26#1,393May31#1,375Jun29#1,406Jul28#1,216Aug19#1,957Sep19#2,130Oct21#1,946Nov20#2,165Dec18#2,190
Each square is a month's mean PM2.5 in US AQI from Mesquite'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 Mesquite 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

Mesquite's worst months

MonthUS AQIDays measuredWorld rankEpisode
September 2024 478.5 µg/m³30 of 30704thof 2,010Nevada and Utah, United States, September 2024
July 2024 346.1 µg/m³30 of 311,948thof 2,566–
August 2026 335.9 µg/m³31 of 312,509thof 2,896–
May 2023 315.5 µg/m³31 of 311,375thof 1,600–
June 2025 295.3 µg/m³28 of 302,267thof 2,508–
August 2025 295.3 µg/m³31 of 312,649thof 2,901–

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.

Mesquite's worst days

DayUS AQIEpisode
11 Sept 2024 16068.8 µg/m³Nevada and Utah, United States, September 2024
27 Jul 2024 8527.3 µg/m³–
5 Sept 2024 7924.3 µg/m³–
6 Sept 2024 6516.6 µg/m³–
8 Aug 2026 6214.9 µg/m³–
12 Sept 2024 6114.7 µg/m³–
17 May 2026 6114.7 µg/m³–
16 Jun 2024 5812.9 µg/m³–
7 Aug 2024 5812.8 µg/m³–
4 Aug 2025 5812.8 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, Mesquite, Nevada, 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/mesquite-nevada/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.

Mesquite 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).