SmogRank / United States / California / Solvang
Solvang, month by month
Solvang has a measured daily mean on 1,208 days since 12 April 2023. Its worst month was September 2023, at 51 US AQI (9.3 µg/m³), 726th of 2,176 cities on that month's world ranking. Its cleanest was January 2024, at 12 US AQI (2.1 µg/m³). 2025 averaged 24 US AQI (4.4 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
3 months
| Month | Why |
|---|---|
| Oct 2026 | 6 of 11 days measured; a month needs 8. The others: 5 with readings for part of the day (a day needs 18 hours). |
| Feb 2024 | 20 of 29 days measured; a month needs 21. The others: 4 with no readings from the monitors, 4 with readings for part of the day (a day needs 18 hours), 1 missing from OpenAQ's archive. |
| Apr 2023 | 16 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.
Solvang's worst months
| Month | US AQI | World rank |
|---|---|---|
| September 2023 | 519.3 µg/m³ | 726thof 2,176 |
| May 2026 | 376.7 µg/m³ | 1,714thof 2,874 |
| June 2025 | 366.4 µg/m³ | 2,109thof 2,508 |
| July 2023 | 346.2 µg/m³ | 1,065thof 1,432 |
| August 2026 | 346.2 µg/m³ | 2,407thof 2,896 |
| June 2024 | 346.1 µg/m³ | 1,990thof 2,563 |
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.
Solvang's worst days
| Day | US AQI |
|---|---|
| 22 Sept 2023 | 8024.5 µg/m³ |
| 23 Sept 2023 | 7924.0 µg/m³ |
| 21 Sept 2023 | 7521.9 µg/m³ |
| 8 Nov 2024 | 6818.4 µg/m³ |
| 20 Sept 2023 | 6717.7 µg/m³ |
| 24 Sept 2023 | 6516.5 µg/m³ |
| 25 Dec 2025 | 5913.6 µg/m³ |
| 17 May 2026 | 5913.6 µg/m³ |
| 29 Aug 2023 | 5913.3 µg/m³ |
| 1 Sept 2023 | 5712.2 µg/m³ |
Daily means, the highest since 12 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, Solvang, United States, 12 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/solvang/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.
Solvang now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 18:07 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).