SmogRank / United States / California / Sacramento
Sacramento, month by month
Sacramento has a measured daily mean on 1,362 days since 1 January 2023. Its worst month was January 2026, at 62 US AQI (14.8 µg/m³), 769th of 2,617 cities on that month's world ranking. Its cleanest was March 2024, at 22 US AQI (3.9 µg/m³). 2025 averaged 37 US AQI (6.7 µg/m³), against 42 US AQI (7.5 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
Sacramento's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| January 2026 | 6214.8 µg/m³ | 769thof 2,617 | California and Oregon, United States, January 2026 |
| December 2024 | 6014.1 µg/m³ | 522ndof 2,616 | California and Oregon, United States, December 2024 |
| January 2025 | 5812.8 µg/m³ | 636thof 2,474 | – |
| December 2023 | 5612.0 µg/m³ | 438thof 2,247 | California and Oregon, United States, December 2023 |
| November 2023 | 5611.9 µg/m³ | 304thof 2,243 | – |
| February 2023 | 5310.1 µg/m³ | 662ndof 1,129 | – |
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.
Sacramento's worst days
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, Sacramento, 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/sacramento/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.
Sacramento now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 21:07 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).