SmogRank / United States / Utah / Moab
Moab, month by month
Moab has a measured daily mean on 1,218 days since 17 April 2023. Its worst month was July 2025, at 57 US AQI (12.1 µg/m³), 811th of 2,889 cities on that month's world ranking. Its cleanest was March 2024, at 22 US AQI (3.9 µg/m³). 2025 averaged 39 US AQI (7.1 µg/m³), against 39 US AQI (7.1 µg/m³) in 2024.
Every month since 2023
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
2 months
| Month | Why |
|---|---|
| Jul 2026 | 21 of 31 days measured; a month needs 22. The others: 8 with no readings from the monitor, 2 with readings for part of the day (a day needs 18 hours). |
| Apr 2023 | 11 of 30 days measured; a month needs 21. The others: 3 missing from OpenAQ's archive. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Moab's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| July 2025 | 5712.1 µg/m³ | 811thof 2,889 | – |
| October 2024 | 529.9 µg/m³ | 532ndof 2,020 | North-western United States, October 2024 |
| June 2026 | 529.7 µg/m³ | 699thof 2,497 | Utah and Colorado, United States, June 2026 |
| June 2025 | 519.2 µg/m³ | 1,543rdof 2,508 | – |
| August 2025 | 509.0 µg/m³ | 1,483rdof 2,901 | – |
| August 2026 | 498.9 µg/m³ | 1,219thof 2,896 | – |
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.
Moab's worst days
| Day | US AQI | Episode |
|---|---|---|
| 24 Jun 2026 | 12043.1 µg/m³ | Utah and Colorado, United States, June 2026 |
| 23 Jun 2026 | 11541.3 µg/m³ | Utah and Colorado, United States, June 2026 |
| 1 Jul 2026 | 10637.6 µg/m³ | – |
| 30 Jun 2026 | 9331.6 µg/m³ | – |
| 15 Jul 2025 | 8929.3 µg/m³ | – |
| 23 Jul 2024 | 8728.5 µg/m³ | – |
| 6 Oct 2024 | 8125.0 µg/m³ | North-western United States, October 2024 |
| 16 Jul 2025 | 7823.4 µg/m³ | – |
| 24 Jul 2024 | 7622.7 µg/m³ | – |
| 7 Oct 2024 | 7521.8 µg/m³ | North-western United States, October 2024 |
Daily means, the highest since 17 Apr 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, Moab, United States, 17 Apr 2023 – 11 Oct 2026. Monitor data from AirNow, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/us/moab/history (accessed 12 Oct 2026).
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.
Moab now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 17:07 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).