SmogRank / United States / Utah / Bountiful
Bountiful, month by month
Bountiful has a measured daily mean on 1,305 days since 1 January 2023. Its worst month was July 2024, at 55 US AQI (11.5 µg/m³), 489th of 2,566 cities on that month's world ranking. Its cleanest was May 2024, at 19 US AQI (3.4 µg/m³). 2025 averaged 37 US AQI (6.6 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
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.
Bountiful's worst months
| Month | US AQI | World rank |
|---|---|---|
| July 2024 | 5511.5 µg/m³ | 489thof 2,566 |
| December 2024 | 5511.3 µg/m³ | 735thof 2,616 |
| December 2023 | 5511.2 µg/m³ | 506thof 2,247 |
| January 2026 | 5310.3 µg/m³ | 1,054thof 2,617 |
| August 2026 | 519.1 µg/m³ | 1,155thof 2,896 |
| August 2025 | 509.0 µg/m³ | 1,483rdof 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.
Bountiful's worst days
| Day | US AQI | Episode |
|---|---|---|
| 24 Jun 2026 | 9130.4 µg/m³ | Utah and Colorado, United States, June 2026 |
| 11 Sept 2024 | 8829.2 µg/m³ | North-western United States and Canada, 4 to 11 September 2024 |
| 1 Jan 2026 | 8628.0 µg/m³ | – |
| 1 Feb 2023 | 8527.1 µg/m³ | Utah and Idaho, United States, February 2023 |
| 3 Aug 2024 | 8427.0 µg/m³ | – |
| 18 Dec 2023 | 8426.9 µg/m³ | – |
| 5 Dec 2024 | 8426.8 µg/m³ | – |
| 4 Dec 2024 | 8426.6 µg/m³ | – |
| 17 Dec 2023 | 8326.3 µg/m³ | – |
| 4 Sept 2024 | 8326.1 µg/m³ | North-western United States and Canada, 4 to 11 September 2024 |
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, Bountiful, 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/bountiful/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.
Bountiful 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).