SmogRank / United States / Utah / Enoch
Enoch, month by month
Enoch has a measured daily mean on 1,298 days since 1 January 2023. Its worst month was June 2025, at 55 US AQI (11.1 µg/m³), 990th of 2,508 cities on that month's world ranking. Its cleanest was February 2024, at 13 US AQI (2.3 µg/m³). 2025 averaged 34 US AQI (6.1 µg/m³), against 25 US AQI (4.5 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 |
|---|---|
| Mar 2023 | 11 of 31 days measured; a month needs 22. The others: 20 missing from OpenAQ's archive. |
| Feb 2023 | 3 of 28 days measured; a month needs 20. The others: 25 missing from OpenAQ's archive. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Enoch's worst months
| Month | US AQI | World rank |
|---|---|---|
| June 2025 | 5511.1 µg/m³ | 990thof 2,508 |
| July 2025 | 468.2 µg/m³ | 1,729thof 2,889 |
| August 2025 | 427.6 µg/m³ | 1,940thof 2,901 |
| June 2026 | 417.3 µg/m³ | 1,331stof 2,497 |
| July 2023 | 407.2 µg/m³ | 958thof 1,432 |
| July 2024 | 386.9 µg/m³ | 1,728thof 2,566 |
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.
Enoch's worst days
| Day | US AQI |
|---|---|
| 22 Jun 2025 | 9231.1 µg/m³ |
| 29 Jun 2025 | 7622.5 µg/m³ |
| 28 Jun 2025 | 7421.6 µg/m³ |
| 5 Sept 2024 | 7421.3 µg/m³ |
| 23 Jun 2026 | 6617.3 µg/m³ |
| 26 Jun 2025 | 6617.1 µg/m³ |
| 25 Jun 2025 | 6416.3 µg/m³ |
| 27 Jun 2025 | 6415.9 µg/m³ |
| 2 Mar 2025 | 6214.8 µg/m³ |
| 11 Jun 2026 | 6114.6 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, Enoch, 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/enoch/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.
Enoch now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 19:07 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).