SmogRank / United States / Utah / Price
Price, month by month
Price has a measured daily mean on 1,252 days since 18 April 2023. Its worst month was July 2025, at 49 US AQI (8.8 µg/m³), 1,560th of 2,889 cities on that month's world ranking. Its cleanest was February 2025, at 10 US AQI (1.8 µg/m³). 2025 averaged 23 US AQI (4.2 µg/m³), against 21 US AQI (3.7 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
1 month
| Month | Why |
|---|---|
| Apr 2023 | 10 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.
Price's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| July 2025 | 498.8 µg/m³ | 1,560thof 2,889 | – |
| June 2026 | 478.5 µg/m³ | 933rdof 2,497 | Utah and Colorado, United States, June 2026 |
| August 2026 | 478.4 µg/m³ | 1,422ndof 2,896 | North-western United States and Canada, July and August 2026 |
| July 2024 | 427.5 µg/m³ | 1,533rdof 2,566 | – |
| June 2025 | 417.4 µg/m³ | 1,946thof 2,508 | – |
| August 2025 | 346.2 µg/m³ | 2,450thof 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.
Price's worst days
| Day | US AQI | Episode |
|---|---|---|
| 24 Jun 2026 | 13348.3 µg/m³ | Utah and Colorado, United States, June 2026 |
| 3 Aug 2026 | 10135.6 µg/m³ | North-western United States and Canada, July and August 2026 |
| 2 Aug 2026 | 8929.7 µg/m³ | North-western United States and Canada, July and August 2026 |
| 21 Jun 2025 | 7924.0 µg/m³ | – |
| 28 Jul 2025 | 7622.3 µg/m³ | – |
| 23 Jun 2026 | 7120.0 µg/m³ | Utah and Colorado, United States, June 2026 |
| 23 Jul 2024 | 7119.9 µg/m³ | – |
| 22 Jun 2026 | 7019.4 µg/m³ | – |
| 19 May 2023 | 6818.4 µg/m³ | – |
| 20 Jun 2025 | 6818.4 µg/m³ | – |
Daily means, the highest since 18 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, Price, United States, 18 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/price/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.
Price 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).