SmogRank / United States / Indiana / Terre Haute
Terre Haute, month by month
Terre Haute has a measured daily mean on 1,033 days since 11 January 2023. Its worst month was June 2023, at 78 US AQI (23.4 µg/m³), 203rd of 1,603 cities on that month's world ranking. Its cleanest was October 2023, at 36 US AQI (6.4 µg/m³). 2025 averaged 51 US AQI (9.3 µg/m³), against 49 US AQI (8.9 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
11 months
| Month | Why |
|---|---|
| Aug 2026 | 1 of 31 days measured; a month needs 22. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Jul 2026 | 12 of 31 days measured; a month needs 22. The others: 19 with under 18 hours of readings or readings that failed our checks. |
| Jun 2026 | 8 of 30 days measured; a month needs 21. The others: 22 with under 18 hours of readings or readings that failed our checks. |
| May 2026 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Apr 2026 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Mar 2026 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Feb 2026 | 10 of 28 days measured; a month needs 20. The others: 18 with under 18 hours of readings or readings that failed our checks. |
| Aug 2024 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Jul 2024 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Jun 2024 | 3 of 30 days measured; a month needs 21. The others: 27 with under 18 hours of readings or readings that failed our checks. |
| Jan 2023 | 18 of 31 days measured; a month needs 22. The others: 3 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.
Terre Haute's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| June 2023 | 7823.4 µg/m³ | 203rdof 1,603 | Eastern United States and Canada, June and July 2023 United States and Canada, June 2023and 1 more |
| July 2023 | 6114.2 µg/m³ | 190thof 1,432 | United States and Canada, July 2023 North-eastern United States, 4 to 5 July 2023and 1 more |
| June 2025 | 6013.7 µg/m³ | 573rdof 2,508 | Northern United States and Canada, June 2025 |
| February 2024 | 5612.0 µg/m³ | 476thof 2,486 | – |
| November 2023 | 5611.7 µg/m³ | 335thof 2,243 | – |
| October 2024 | 5511.5 µg/m³ | 417thof 2,020 | – |
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.
Terre Haute's worst days
| Day | US AQI | Episode |
|---|---|---|
| 28 Jun 2023 | 235160.0 µg/m³ | Eastern United States and Canada, June and July 2023 |
| 27 Jun 2023 | 16067.8 µg/m³ | Eastern United States and Canada, June and July 2023 |
| 19 Jul 2026 | 13047.4 µg/m³ | Northern United States and Canada, July 2026 |
| 16 Jul 2023 | 11641.6 µg/m³ | United States and Canada, July 2023 |
| 20 Jul 2026 | 11240.0 µg/m³ | Northern United States and Canada, July 2026 |
| 18 Jun 2023 | 9432.2 µg/m³ | United States and Canada, June 2023 |
| 5 Jul 2025 | 9432.0 µg/m³ | North-eastern United States, July 2025 |
| 12 Jun 2025 | 9331.4 µg/m³ | Northern United States and Canada, June 2025 |
| 4 Jul 2023 | 9231.3 µg/m³ | North-eastern United States, 4 to 5 July 2023 |
| 6 Jun 2023 | 9130.7 µg/m³ | Eastern United States and Canada, May and June 2023 |
Daily means, the highest since 11 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, Terre Haute, United States, 11 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/terre-haute/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.
Terre Haute 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).