SmogRank / United States / Illinois / Elmwood Park
Elmwood Park, month by month
Elmwood Park has a measured daily mean on 638 days since 22 August 2024. Its worst month was July 2026, at 91 US AQI (30.4 µg/m³), 136th of 2,784 cities on that month's world ranking. Its cleanest was May 2025, at 44 US AQI (7.9 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
6 months
| Month | Why |
|---|---|
| Mar 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. |
| Feb 2025 | No day measured. The others: 10 with no readings from the monitors, 1 with readings for part of the day (a day needs 18 hours), 17 with under 18 hours of readings or readings that failed our checks. |
| Jan 2025 | No day measured. The others: 19 with no readings from the monitors, 3 with readings for part of the day (a day needs 18 hours), 9 with under 18 hours of readings or readings that failed our checks. |
| Dec 2024 | No day measured. The others: 1 with readings for part of the day (a day needs 18 hours), 30 with under 18 hours of readings or readings that failed our checks. |
| Nov 2024 | 15 of 30 days measured; a month needs 21. The others: 15 with under 18 hours of readings or readings that failed our checks. |
| Aug 2024 | 8 of 31 days measured; a month needs 22. The others: 2 with readings for part of the day (a day needs 18 hours). |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Elmwood Park's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| July 2026 | 9130.4 µg/m³ | 136thof 2,784 | Northern United States and Canada, July 2026 |
| June 2025 | 7521.8 µg/m³ | 197thof 2,508 | Northern United States and Canada, June 2025 Northern United States and Canada, May and June 2025 |
| July 2025 | 7220.4 µg/m³ | 194thof 2,889 | North-eastern United States and Canada, 29 July to 9 August 2025 Northern United States, July 2025and 2 more |
| August 2025 | 6617.0 µg/m³ | 278thof 2,901 | North-eastern United States and Canada, 29 July to 9 August 2025 |
| December 2025 | 6617.0 µg/m³ | 644thof 3,006 | Northern United States, December 2025 |
| August 2026 | 6315.7 µg/m³ | 361stof 2,896 | – |
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.
Elmwood Park's worst days
| Day | US AQI | Episode |
|---|---|---|
| 16 Jul 2026 | 271196.0 µg/m³ | Northern United States and Canada, July 2026 |
| 17 Jul 2026 | 211136.0 µg/m³ | Northern United States and Canada, July 2026 |
| 31 Jul 2025 | 16575.4 µg/m³ | North-eastern United States and Canada, 29 July to 9 August 2025 |
| 5 Jun 2025 | 16270.6 µg/m³ | Northern United States and Canada, May and June 2025 |
| 19 Jul 2026 | 15764.4 µg/m³ | Northern United States and Canada, July 2026 |
| 20 Jul 2026 | 15459.1 µg/m³ | Northern United States and Canada, July 2026 |
| 7 Jul 2026 | 15156.2 µg/m³ | – |
| 1 Aug 2025 | 14252.2 µg/m³ | North-eastern United States and Canada, 29 July to 9 August 2025 |
| 14 Jul 2025 | 12545.2 µg/m³ | Northern United States and Canada, July 2025 |
| 6 Jun 2025 | 12244.2 µg/m³ | Northern United States and Canada, May and June 2025 |
Daily means, the highest since 22 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, Elmwood Park, United States, 22 Aug 2024 – 11 Oct 2026. Monitor data from AirGradient and Clarity via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/us/elmwood-park/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.
Elmwood Park 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).