SmogRank / United States / New Jersey / Paterson
Paterson, month by month
Paterson has a measured daily mean on 1,311 days since 1 January 2023. Its worst month was July 2026, at 61 US AQI (14.4 µg/m³), 560th of 2,784 cities on that month's world ranking. Its cleanest was October 2025, at 27 US AQI (4.8 µg/m³). 2025 averaged 39 US AQI (7.1 µg/m³), against 38 US AQI (6.9 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
2 months
| Month | Why |
|---|---|
| Jun 2023 | 18 of 30 days measured; a month needs 21. The others: 12 with under 18 hours of readings or readings that failed our checks. |
| Feb 2023 | 16 of 28 days measured; a month needs 20. The others: 10 missing from OpenAQ's archive, 2 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.
Paterson's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| July 2026 | 6114.4 µg/m³ | 560thof 2,784 | Northern United States and Canada, July 2026 |
| July 2023 | 5913.4 µg/m³ | 248thof 1,432 | United States and Canada, July 2023 North-eastern United States, 19 July 2023and 1 more |
| July 2024 | 5310.1 µg/m³ | 712thof 2,566 | – |
| June 2025 | 5310.1 µg/m³ | 1,264thof 2,508 | – |
| December 2023 | 5310.0 µg/m³ | 695thof 2,247 | – |
| July 2025 | 529.8 µg/m³ | 1,310thof 2,889 | North-eastern United States and Canada, 29 July to 9 August 2025 North-eastern United States and Canada, 24 to 28 July 2025 |
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.
Paterson's worst days
| Day | US AQI | Episode |
|---|---|---|
| 7 Jun 2023 | 198122.0 µg/m³ | Eastern United States and Canada, May and June 2023 |
| 8 Jun 2023 | 16270.8 µg/m³ | Eastern United States and Canada, May and June 2023 |
| 16 Jul 2026 | 15966.6 µg/m³ | Northern United States and Canada, July 2026 |
| 6 Jun 2023 | 14151.6 µg/m³ | Eastern United States and Canada, May and June 2023 |
| 15 Jul 2026 | 11440.9 µg/m³ | Northern United States and Canada, July 2026 |
| 18 Jul 2026 | 10938.8 µg/m³ | Northern United States and Canada, July 2026 |
| 17 Jul 2026 | 10637.6 µg/m³ | Northern United States and Canada, July 2026 |
| 1 Jul 2023 | 10336.4 µg/m³ | Eastern United States and Canada, June and July 2023 |
| 29 Jun 2023 | 10035.4 µg/m³ | Eastern United States and Canada, June and July 2023 |
| 5 Jul 2024 | 9633.1 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, Paterson, 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/paterson/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.
Paterson now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 19:07 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).