SmogRank / United States / Arizona / Payson

Payson, month by month

Payson has a measured daily mean on 487 days since 8 April 2025. Its worst month was December 2025, at 59 US AQI (13.2 µg/m³), 846th of 3,006 cities on that month's world ranking. Its cleanest was June 2026, at 22 US AQI (4.0 µg/m³).

Every month since 2025

202638 so far261 days measured2,281st of 2,791 in the world

Jan56#950 Feb53#1,328 Mar40#2,314 Apr30#2,400 May27#2,385 Jun22#2,300 Jul32#2,469 Aug40#1,998 Sep24#2,597Oct4 days

2025too few days for a mean (a year needs 256)226 days measured

JanFebMarApr15 daysMay58#518 Jun56#875 Jul52#1,361 Aug53#1,233 Sep40#1,612 Oct38#1,211Nov20 daysDec59#846

Each square is a month's mean PM2.5 in US AQI from Payson'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 Payson marked; each year, the year's.

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
Oct 2026	4 of 11 days measured; a month needs 8. The others: 3 with no readings from the monitor, 4 with readings for part of the day (a day needs 18 hours).
Nov 2025	20 of 30 days measured; a month needs 21. The others: 10 with under 18 hours of readings or readings that failed our checks.
Apr 2025	15 of 30 days measured; a month needs 21. The others: 8 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.

Payson's worst months

Month	US AQI	Days measured	World rank
December 2025	5913.2 µg/m³	30 of 31	846thof 3,006
May 2025	5813.0 µg/m³	24 of 31	518thof 2,826
January 2026	5611.7 µg/m³	30 of 31	950thof 2,617
June 2025	5611.6 µg/m³	24 of 30	875thof 2,508
February 2026	5310.3 µg/m³	27 of 28	1,328thof 2,866
August 2025	5310.0 µg/m³	29 of 31	1,233rdof 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.

Payson's worst days

Day	US AQI
12 Nov 2025	15358.4 µg/m³
13 Nov 2025	11139.4 µg/m³
5 Nov 2025	10236.1 µg/m³
11 Nov 2025	9834.2 µg/m³
6 Nov 2025	8225.6 µg/m³
5 Mar 2026	8024.9 µg/m³
14 Aug 2025	7823.7 µg/m³
17 Apr 2025	7722.9 µg/m³
6 Dec 2025	7522.2 µg/m³
13 Sept 2025	7421.5 µg/m³

Daily means, the highest since 8 Apr 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, Payson, United States, 8 Apr 2025 – 9 Oct 2026. Monitor data from AirNow, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/us/payson-arizona/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.

Payson 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).