SmogRank / United States / Colorado / Lakewood
Lakewood, month by month
Lakewood has a measured daily mean on 587 days since 14 August 2024. Its worst month was August 2025, at 45 US AQI (8.1 µg/m³), 1,793rd of 2,901 cities on that month's world ranking. Its cleanest was September 2026, at 17 US AQI (3.0 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
10 months
| Month | Why |
|---|---|
| Aug 2026 | 17 of 31 days measured; a month needs 22. The others: 14 with under 18 hours of readings or readings that failed our checks. |
| Jul 2026 | 11 of 31 days measured; a month needs 22. The others: 20 with under 18 hours of readings or readings that failed our checks. |
| Jun 2026 | 7 of 30 days measured; a month needs 21. The others: 23 with under 18 hours of readings or readings that failed our checks. |
| May 2026 | 11 of 31 days measured; a month needs 22. The others: 20 with under 18 hours of readings or readings that failed our checks. |
| Apr 2026 | 10 of 30 days measured; a month needs 21. The others: 20 with under 18 hours of readings or readings that failed our checks. |
| Jun 2025 | 14 of 30 days measured; a month needs 21. The others: 16 with under 18 hours of readings or readings that failed our checks. |
| May 2025 | 16 of 31 days measured; a month needs 22. The others: 15 with under 18 hours of readings or readings that failed our checks. |
| Feb 2025 | 19 of 28 days measured; a month needs 20. The others: 9 with under 18 hours of readings or readings that failed our checks. |
| Jan 2025 | 21 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks. |
| Aug 2024 | 14 of 31 days measured; a month needs 22. The others: 4 with under 18 hours of readings or readings that failed our checks. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Lakewood's worst months
| Month | US AQI | World rank |
|---|---|---|
| August 2025 | 458.1 µg/m³ | 1,793rdof 2,901 |
| July 2025 | 417.4 µg/m³ | 1,907thof 2,889 |
| September 2025 | 386.9 µg/m³ | 1,725thof 3,104 |
| October 2024 | 366.5 µg/m³ | 1,303rdof 2,020 |
| September 2024 | 315.6 µg/m³ | 1,624thof 2,010 |
| November 2025 | 305.4 µg/m³ | 2,321stof 2,715 |
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.
Lakewood's worst days
| Day | US AQI |
|---|---|
| 4 Sept 2025 | 7220.6 µg/m³ |
| 6 Sept 2025 | 7119.8 µg/m³ |
| 5 Sept 2025 | 7019.3 µg/m³ |
| 28 Jun 2026 | 6918.7 µg/m³ |
| 1 Jul 2026 | 6918.5 µg/m³ |
| 5 Jul 2026 | 6416.3 µg/m³ |
| 9 Aug 2026 | 6416.2 µg/m³ |
| 21 Nov 2025 | 6114.5 µg/m³ |
| 4 Jul 2026 | 6014.0 µg/m³ |
| 12 Jul 2025 | 5913.4 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, Lakewood, United States, 14 Aug 2024 – 11 Oct 2026. Monitor data from Clarity and Love My Air Denver via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/us/lakewood/history (accessed 13 Oct 2026). Contains readings from Love My Air (City and County of Denver), no reuse terms published.
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.
Lakewood now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-13 02:07 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).