SmogRank / United States / California / Goleta
Goleta, month by month
Goleta has a measured daily mean on 755 days since 26 April 2024. Its worst month was August 2026, at 47 US AQI (8.5 µg/m³), 1,373rd of 2,896 cities on that month's world ranking. Its cleanest was April 2026, at 15 US AQI (2.7 µg/m³).
Every month since 2024
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
5 months
| Month | Why |
|---|---|
| Jun 2025 | 12 of 30 days measured; a month needs 21. The others: 18 with under 18 hours of readings or readings that failed our checks. |
| May 2025 | 15 of 31 days measured; a month needs 22. The others: 16 with under 18 hours of readings or readings that failed our checks. |
| Jun 2024 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| May 2024 | 10 of 31 days measured; a month needs 22. The others: 21 with under 18 hours of readings or readings that failed our checks. |
| Apr 2024 | 5 of 30 days measured; a month needs 21. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Goleta's worst months
| Month | US AQI | World rank |
|---|---|---|
| August 2026 | 478.5 µg/m³ | 1,373rdof 2,896 |
| December 2024 | 458.1 µg/m³ | 1,333rdof 2,616 |
| March 2026 | 448.0 µg/m³ | 2,137thof 2,971 |
| November 2025 | 427.6 µg/m³ | 1,656thof 2,715 |
| August 2025 | 417.3 µg/m³ | 2,059thof 2,901 |
| October 2024 | 397.0 µg/m³ | 1,118thof 2,020 |
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.
Goleta's worst days
| Day | US AQI |
|---|---|
| 29 Aug 2026 | 7722.8 µg/m³ |
| 2 Nov 2025 | 7522.2 µg/m³ |
| 15 Mar 2026 | 7522.0 µg/m³ |
| 29 Nov 2025 | 7421.5 µg/m³ |
| 8 Nov 2024 | 7120.1 µg/m³ |
| 3 Nov 2025 | 7019.4 µg/m³ |
| 7 Nov 2024 | 7019.3 µg/m³ |
| 4 Nov 2025 | 6818.1 µg/m³ |
| 25 Oct 2025 | 6717.7 µg/m³ |
| 5 Dec 2024 | 6617.4 µg/m³ |
Daily means, the highest since 26 Apr 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, Goleta, United States, 26 Apr 2024 – 11 Oct 2026. Monitor data from Clarity and AirGradient via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/us/goleta/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.
Goleta 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).