SmogRank / United States / Utah / Heber City

Heber City, month by month

Heber City has a measured daily mean on 778 days since 14 August 2024. Its worst month was July 2025, at 47 US AQI (8.5 µg/m³), 1,644th of 2,889 cities on that month's world ranking. Its cleanest was April 2026, at 18 US AQI (3.2 µg/m³).

Every month since 2024

202627 so far284 days measured2,651st of 2,793 in the world

Jan28#2,321 Feb19#2,783 Mar20#2,860 Apr18#2,850 May24#2,540 Jun40#1,374 Jul36#2,293 Aug39#2,099 Sep21#2,809 Oct24#2,386

202529 for the year357 days measured2,503rd of 2,681 in the world

Jan29#2,192 Feb22#2,533 Mar22#2,677 Apr26#2,650 May28#2,302 Jun43#1,890 Jul47#1,644 Aug38#2,249 Sep26#2,768 Oct21#2,475 Nov23#2,558 Dec20#2,898

2024too few days for a mean (a year needs 257)137 days measured

JanFebMarAprMayJunJulAug18 daysSep35#1,404 Oct29#1,706 Nov18#2,541 Dec24#2,407

Each square is a month's mean PM2.5 in US AQI from Heber City's measured days, with its place on that month's world ranking under it. A month has a mean once 70% of its days are measured, the rule the monthly rankings use; under that, the square gives the days measured. Each square opens that month's ranking with Heber City marked; each year, the year's. A dashed square is the running month, so far.

Good0–50

Moderate51–100

Sensitive groups101–150

Unhealthy151–200

Very unhealthy201–300

Hazardous301+

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
Aug 2024	18 of 31 days measured; a month needs 22.

A day counts once 18 hours of it are measured; a month needs 70% of its days.

Heber City's worst months

Month	US AQI	Days measured	World rank	Episode
July 2025	478.5 µg/m³	31 of 31	1,644thof 2,889	–
June 2025	437.7 µg/m³	30 of 30	1,890thof 2,508	–
June 2026	407.2 µg/m³	30 of 30	1,374thof 2,497	Utah and Colorado, United States, June 2026
August 2026	397.0 µg/m³	31 of 31	2,099thof 2,896	–
August 2025	386.8 µg/m³	31 of 31	2,249thof 2,901	–
July 2026	366.5 µg/m³	31 of 31	2,293rdof 2,784	–

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.

Heber City's worst days

Day	US AQI	Episode
23 Jun 2026	8427.0 µg/m³	Utah and Colorado, United States, June 2026
24 Jun 2026	8225.7 µg/m³	Utah and Colorado, United States, June 2026
11 Sept 2024	7924.3 µg/m³	–
22 Jun 2026	7220.6 µg/m³	–
30 Jul 2025	6918.8 µg/m³	–
8 Oct 2024	6516.7 µg/m³	–
21 Jun 2025	6516.7 µg/m³	–
30 Jan 2025	6315.5 µg/m³	–
3 Aug 2026	6315.3 µg/m³	–
20 Jun 2026	6215.1 µg/m³	–

Daily means, the highest since 14 Aug 2024; 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, Heber City, United States, 14 Aug 2024 – 11 Oct 2026. Monitor data from AirNow, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/us/heber-city/history (accessed 12 Oct 2026).

Download chart (PNG)

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.

Heber City now: the last 24 hours, its ranks today and the last 12 months day by day.

Updated 2026-10-12 22:07 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).