SmogRank / United States / Utah / Magna
Magna, month by month
Magna has a measured daily mean on 1,365 days since 1 January 2023. Its worst month was February 2023, at 58 US AQI (12.9 µg/m³), 482nd of 1,129 cities on that month's world ranking. Its cleanest was March 2023, at 19 US AQI (3.4 µg/m³). 2025 averaged 34 US AQI (6.2 µg/m³), against 37 US AQI (6.7 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
Magna's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| February 2023 | 5812.9 µg/m³ | 482ndof 1,129 | Utah and Idaho, United States, February 2023 |
| December 2023 | 5712.4 µg/m³ | 407thof 2,247 | – |
| July 2024 | 5712.3 µg/m³ | 386thof 2,566 | – |
| November 2023 | 5310.1 µg/m³ | 600thof 2,243 | Utah and Idaho, United States, November 2023 |
| December 2024 | 5310.0 µg/m³ | 888thof 2,616 | – |
| January 2026 | 529.8 µg/m³ | 1,132ndof 2,617 | – |
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.
Magna's worst days
| Day | US AQI | Episode |
|---|---|---|
| 3 Feb 2023 | 11340.4 µg/m³ | Utah and Idaho, United States, February 2023 |
| 4 Feb 2023 | 10938.9 µg/m³ | Utah and Idaho, United States, February 2023 |
| 11 Sept 2024 | 9834.3 µg/m³ | North-western United States and Canada, 4 to 11 September 2024 |
| 5 Jul 2024 | 9532.5 µg/m³ | – |
| 2 Feb 2023 | 9432.3 µg/m³ | Utah and Idaho, United States, February 2023 |
| 1 Feb 2023 | 8929.3 µg/m³ | Utah and Idaho, United States, February 2023 |
| 5 Feb 2023 | 8728.6 µg/m³ | Utah and Idaho, United States, February 2023 |
| 4 Sept 2024 | 8527.5 µg/m³ | North-western United States and Canada, 4 to 11 September 2024 |
| 4 Dec 2024 | 8527.4 µg/m³ | – |
| 30 Aug 2023 | 8426.9 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, Magna, 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/magna/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.
Magna 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).