SmogRank / United States / Illinois / Jerseyville
Jerseyville, month by month
Jerseyville has a measured daily mean on 1,280 days since 1 January 2023. Its worst month was June 2023, at 69 US AQI (18.6 µg/m³), 292nd of 1,603 cities on that month's world ranking. Its cleanest was May 2025, at 21 US AQI (3.7 µg/m³). 2025 averaged 37 US AQI (6.7 µg/m³), against 35 US AQI (6.3 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 |
|---|---|
| Mar 2024 | 5 of 31 days measured; a month needs 22. The others: 24 with no readings from the monitor, 1 with readings for part of the day (a day needs 18 hours), 1 missing from OpenAQ's archive. |
| Mar 2023 | 11 of 31 days measured; a month needs 22. The others: 20 missing from OpenAQ's archive. |
| Feb 2023 | 3 of 28 days measured; a month needs 20. The others: 25 missing from OpenAQ's archive. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Jerseyville's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| June 2023 | 6918.6 µg/m³ | 292ndof 1,603 | Eastern United States and Canada, June and July 2023 |
| July 2023 | 5511.2 µg/m³ | 508thof 1,432 | United States and Canada, July 2023 Eastern United States and Canada, June and July 2023 |
| September 2023 | 5410.8 µg/m³ | 451stof 2,176 | – |
| July 2026 | 5310.4 µg/m³ | 1,259thof 2,784 | Northern United States and Canada, July 2026 |
| June 2025 | 5310.2 µg/m³ | 1,243rdof 2,508 | Northern United States and Canada, May and June 2025 |
| August 2023 | 529.5 µg/m³ | 701stof 1,980 | – |
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.
Jerseyville's worst days
| Day | US AQI | Episode |
|---|---|---|
| 28 Jun 2023 | 16981.7 µg/m³ | Eastern United States and Canada, June and July 2023 |
| 1 Aug 2025 | 14453.0 µg/m³ | North-eastern United States and Canada, 29 July to 9 August 2025 |
| 27 Jun 2023 | 13248.2 µg/m³ | Eastern United States and Canada, June and July 2023 |
| 16 Jul 2023 | 10838.2 µg/m³ | United States and Canada, July 2023 |
| 20 Jul 2026 | 10537.0 µg/m³ | Northern United States and Canada, July 2026 |
| 15 Mar 2025 | 9231.0 µg/m³ | Eastern United States, March 2025 |
| 7 Jun 2025 | 9029.8 µg/m³ | Northern United States and Canada, May and June 2025 |
| 19 May 2023 | 8125.1 µg/m³ | Northern United States and Canada, May 2023 |
| 5 Jul 2025 | 8125.1 µg/m³ | North-eastern United States, July 2025 |
| 21 Feb 2024 | 8024.7 µg/m³ | – |
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, Jerseyville, 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/jerseyville/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.
Jerseyville now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 20:07 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).