SmogRank / United States / Michigan

Air quality in Royal Oak

Michigan, United States. PM2.5 from 3 low-cost sensors, updated hourly.

1.6 µg/m³
Good

Mean for 19 Sept, the most recent day with readings, 0.1× the WHO 24-hour guideline. No hourly readings have reached us since; some networks publish days late.

Rank

24 h
–
not enough data
7 days
–
not enough data
30 days
–
not enough data
Year
#401
of 2,173 · 12.6 µg/m³

Why it ranks here

Seasonal. Over the past year its worst months were July, averaging up to 37.9 µg/m³ against 6.2 in its cleanest month. Seasonal peaks usually come from heating, crop burning, fire or dust seasons.

Based on Royal Oak's own measurements; causes are the usual kinds for a pattern like this, not a confirmed source.

Hour by hour

No hourly readings in the last few days. The chart returns when the monitors' data arrives.

Every day for a year

SepNovDecJanFebMarAprMayJunJulAugSepMonWedFri2025-09-29: 12.5 µg/m³2025-09-30: 16.8 µg/m³2025-10-01: 9.0 µg/m³2025-10-02: 21.6 µg/m³2025-10-03: 11.2 µg/m³2025-10-04: 29.8 µg/m³2025-10-05: 24.1 µg/m³2025-10-06: 13.8 µg/m³2025-10-07: 1.8 µg/m³2025-10-08: 8.0 µg/m³2025-10-09: 18.8 µg/m³2025-10-10: 15.3 µg/m³2025-10-11: 3.8 µg/m³2025-10-12: 9.6 µg/m³2025-10-13: 9.5 µg/m³2025-10-14: 8.4 µg/m³2025-10-15: 1.2 µg/m³2025-10-16: 11.6 µg/m³2025-10-17: 6.8 µg/m³2025-10-18: 12.5 µg/m³2025-10-19: 10.1 µg/m³2025-10-20: 2.2 µg/m³2025-10-21: 1.4 µg/m³2025-10-22: 0.6 µg/m³2025-10-23: 0.1 µg/m³2025-10-24: 0.4 µg/m³2025-10-25: 5.5 µg/m³2025-10-26: 8.1 µg/m³2025-10-27: 2.4 µg/m³2025-10-28: 1.9 µg/m³2025-10-29: 4.8 µg/m³2025-10-30: 5.5 µg/m³2025-10-31: 2.1 µg/m³2025-11-01: 14.7 µg/m³2025-11-02: 24.3 µg/m³2025-11-03: 6.5 µg/m³2025-11-04: 1.5 µg/m³2025-11-05: 6.5 µg/m³2025-11-06: 1.7 µg/m³2025-11-07: 9.0 µg/m³2025-11-08: 2.1 µg/m³2025-11-09: 3.3 µg/m³2025-11-10: 0.1 µg/m³2025-11-11: 2.9 µg/m³2025-11-12: 4.4 µg/m³2025-11-13: 3.4 µg/m³2025-11-14: no data2025-11-15: 28.6 µg/m³2025-11-16: 0.6 µg/m³2025-11-17: 3.4 µg/m³2025-11-18: 10.7 µg/m³2025-11-19: 5.0 µg/m³2025-11-20: 28.3 µg/m³2025-11-21: 23.1 µg/m³2025-11-22: 6.5 µg/m³2025-11-23: 7.1 µg/m³2025-11-24: 7.7 µg/m³2025-11-25: 18.5 µg/m³2025-11-26: 6.1 µg/m³2025-11-27: 0.2 µg/m³2025-11-28: 0.3 µg/m³2025-11-29: 5.4 µg/m³2025-11-30: 6.4 µg/m³2025-12-01: 1.6 µg/m³2025-12-02: 14.9 µg/m³2025-12-03: 39.3 µg/m³2025-12-04: 7.3 µg/m³2025-12-05: 19.7 µg/m³2025-12-06: 34.3 µg/m³2025-12-07: 9.5 µg/m³2025-12-08: 1.3 µg/m³2025-12-09: 19.5 µg/m³2025-12-10: 12.8 µg/m³2025-12-11: 0.8 µg/m³2025-12-12: 5.7 µg/m³2025-12-13: 12.1 µg/m³2025-12-14: 1.5 µg/m³2025-12-15: 5.0 µg/m³2025-12-16: 23.7 µg/m³2025-12-17: 22.6 µg/m³2025-12-18: 20.4 µg/m³2025-12-19: 3.1 µg/m³2025-12-20: 5.5 µg/m³2025-12-21: 5.0 µg/m³2025-12-22: 11.3 µg/m³2025-12-23: 14.3 µg/m³2025-12-24: 23.5 µg/m³2025-12-25: 16.9 µg/m³2025-12-26: 4.5 µg/m³2025-12-27: 6.2 µg/m³2025-12-28: 18.5 µg/m³2025-12-29: 1.0 µg/m³2025-12-30: 1.7 µg/m³2025-12-31: 12.0 µg/m³2026-01-01: 1.5 µg/m³2026-01-02: 3.8 µg/m³2026-01-03: 5.5 µg/m³2026-01-04: 11.1 µg/m³2026-01-05: 39.7 µg/m³2026-01-06: 41.2 µg/m³2026-01-07: 29.3 µg/m³2026-01-08: 25.4 µg/m³2026-01-09: 5.6 µg/m³2026-01-10: 4.0 µg/m³2026-01-11: 6.2 µg/m³2026-01-12: 10.2 µg/m³2026-01-13: 16.4 µg/m³2026-01-14: 4.7 µg/m³2026-01-15: 2.7 µg/m³2026-01-16: 16.8 µg/m³2026-01-17: 13.2 µg/m³2026-01-18: 3.7 µg/m³2026-01-19: 3.9 µg/m³2026-01-20: no data2026-01-21: no data2026-01-22: 6.7 µg/m³2026-01-23: 7.0 µg/m³2026-01-24: 3.2 µg/m³2026-01-25: no data2026-01-26: no data2026-01-27: no data2026-01-28: no data2026-01-29: no data2026-01-30: no data2026-01-31: no data2026-02-01: no data2026-02-02: no data2026-02-03: no data2026-02-04: no data2026-02-05: no data2026-02-06: no data2026-02-07: no data2026-02-08: no data2026-02-09: no data2026-02-10: no data2026-02-11: no data2026-02-12: no data2026-02-13: no data2026-02-14: no data2026-02-15: no data2026-02-16: no data2026-02-17: no data2026-02-18: 37.2 µg/m³2026-02-19: 14.4 µg/m³2026-02-20: 14.8 µg/m³2026-02-21: 5.8 µg/m³2026-02-22: 4.9 µg/m³2026-02-23: 1.3 µg/m³2026-02-24: 7.1 µg/m³2026-02-25: 18.4 µg/m³2026-02-26: 8.1 µg/m³2026-02-27: 24.1 µg/m³2026-02-28: 2.7 µg/m³2026-03-01: 0.9 µg/m³2026-03-02: no data2026-03-03: 22.6 µg/m³2026-03-04: 31.3 µg/m³2026-03-05: 31.2 µg/m³2026-03-06: 21.9 µg/m³2026-03-07: 9.2 µg/m³2026-03-08: 3.1 µg/m³2026-03-09: 3.0 µg/m³2026-03-10: 16.7 µg/m³2026-03-11: 11.1 µg/m³2026-03-12: 2.8 µg/m³2026-03-13: 3.4 µg/m³2026-03-14: 1.7 µg/m³2026-03-15: 5.4 µg/m³2026-03-16: 1.5 µg/m³2026-03-17: 0.8 µg/m³2026-03-18: 6.2 µg/m³2026-03-19: 20.2 µg/m³2026-03-20: 30.5 µg/m³2026-03-21: 15.8 µg/m³2026-03-22: 21.3 µg/m³2026-03-23: 1.9 µg/m³2026-03-24: 8.6 µg/m³2026-03-25: 12.4 µg/m³2026-03-26: 18.8 µg/m³2026-03-27: 2.5 µg/m³2026-03-28: 3.3 µg/m³2026-03-29: 8.5 µg/m³2026-03-30: 16.5 µg/m³2026-03-31: 17.9 µg/m³2026-04-01: 2.3 µg/m³2026-04-02: 10.7 µg/m³2026-04-03: 5.6 µg/m³2026-04-04: 4.5 µg/m³2026-04-05: 1.2 µg/m³2026-04-06: 4.4 µg/m³2026-04-07: 2.0 µg/m³2026-04-08: 5.6 µg/m³2026-04-09: 10.5 µg/m³2026-04-10: 3.5 µg/m³2026-04-11: 5.7 µg/m³2026-04-12: 10.3 µg/m³2026-04-13: 6.8 µg/m³2026-04-14: 5.2 µg/m³2026-04-15: 4.0 µg/m³2026-04-16: 4.5 µg/m³2026-04-17: 6.7 µg/m³2026-04-18: 4.0 µg/m³2026-04-19: 2.9 µg/m³2026-04-20: 3.3 µg/m³2026-04-21: 5.2 µg/m³2026-04-22: 11.7 µg/m³2026-04-23: 14.0 µg/m³2026-04-24: 24.4 µg/m³2026-04-25: 14.0 µg/m³2026-04-26: 6.6 µg/m³2026-04-27: 4.8 µg/m³2026-04-28: 2.8 µg/m³2026-04-29: 1.0 µg/m³2026-04-30: 0.9 µg/m³2026-05-01: 3.1 µg/m³2026-05-02: 4.0 µg/m³2026-05-03: 4.9 µg/m³2026-05-04: 4.9 µg/m³2026-05-05: 2.1 µg/m³2026-05-06: 1.9 µg/m³2026-05-07: 5.3 µg/m³2026-05-08: 13.5 µg/m³2026-05-09: 14.4 µg/m³2026-05-10: 1.9 µg/m³2026-05-11: 1.8 µg/m³2026-05-12: 2.8 µg/m³2026-05-13: 3.7 µg/m³2026-05-14: 0.8 µg/m³2026-05-15: 3.5 µg/m³2026-05-16: 13.4 µg/m³2026-05-17: 26.8 µg/m³2026-05-18: 18.7 µg/m³2026-05-19: 7.8 µg/m³2026-05-20: 1.2 µg/m³2026-05-21: 1.2 µg/m³2026-05-22: 2.2 µg/m³2026-05-23: 1.1 µg/m³2026-05-24: 15.3 µg/m³2026-05-25: 7.3 µg/m³2026-05-26: 12.1 µg/m³2026-05-27: 7.9 µg/m³2026-05-28: 1.4 µg/m³2026-05-29: 3.0 µg/m³2026-05-30: 2.1 µg/m³2026-05-31: 3.8 µg/m³2026-06-01: no data2026-06-02: 3.1 µg/m³2026-06-03: 6.9 µg/m³2026-06-04: 8.0 µg/m³2026-06-05: 20.6 µg/m³2026-06-06: 10.2 µg/m³2026-06-07: 6.9 µg/m³2026-06-08: 9.4 µg/m³2026-06-09: 13.7 µg/m³2026-06-10: 12.8 µg/m³2026-06-11: 3.1 µg/m³2026-06-12: 1.3 µg/m³2026-06-13: 3.9 µg/m³2026-06-14: 4.4 µg/m³2026-06-15: 0.5 µg/m³2026-06-16: 2.2 µg/m³2026-06-17: 3.1 µg/m³2026-06-18: 4.6 µg/m³2026-06-19: 2.6 µg/m³2026-06-20: 3.1 µg/m³2026-06-21: 4.1 µg/m³2026-06-22: 3.1 µg/m³2026-06-23: 3.2 µg/m³2026-06-24: 5.6 µg/m³2026-06-25: 6.2 µg/m³2026-06-26: 13.7 µg/m³2026-06-27: 13.5 µg/m³2026-06-28: 11.4 µg/m³2026-06-29: 12.1 µg/m³2026-06-30: 18.7 µg/m³2026-07-01: 13.8 µg/m³2026-07-02: 14.5 µg/m³2026-07-03: 10.0 µg/m³2026-07-04: no data2026-07-05: no data2026-07-06: 13.3 µg/m³2026-07-07: 10.8 µg/m³2026-07-08: 18.4 µg/m³2026-07-09: 17.9 µg/m³2026-07-10: 5.7 µg/m³2026-07-11: 17.5 µg/m³2026-07-12: 26.7 µg/m³2026-07-13: 27.0 µg/m³2026-07-14: 24.1 µg/m³2026-07-15: 75.4 µg/m³2026-07-16: 289.0 µg/m³2026-07-17: 225.5 µg/m³2026-07-18: 45.0 µg/m³2026-07-19: 49.4 µg/m³2026-07-20: 40.6 µg/m³2026-07-21: 33.3 µg/m³2026-07-22: 2.1 µg/m³2026-07-23: 1.7 µg/m³2026-07-24: 4.1 µg/m³2026-07-25: 9.7 µg/m³2026-07-26: 22.6 µg/m³2026-07-27: 33.5 µg/m³2026-07-28: 25.8 µg/m³2026-07-29: 4.0 µg/m³2026-07-30: 14.9 µg/m³2026-07-31: 22.3 µg/m³2026-08-01: 27.7 µg/m³2026-08-02: 8.5 µg/m³2026-08-03: 1.1 µg/m³2026-08-04: 2.0 µg/m³2026-08-05: 6.3 µg/m³2026-08-06: 15.6 µg/m³2026-08-07: 19.6 µg/m³2026-08-08: 18.6 µg/m³2026-08-09: 3.0 µg/m³2026-08-10: 12.3 µg/m³2026-08-11: 23.3 µg/m³2026-08-12: 16.5 µg/m³2026-08-13: 20.2 µg/m³2026-08-14: 22.7 µg/m³2026-08-15: 10.7 µg/m³2026-08-16: 12.6 µg/m³2026-08-17: 1.7 µg/m³2026-08-18: 1.7 µg/m³2026-08-19: 3.2 µg/m³2026-08-20: 7.5 µg/m³2026-08-21: 9.6 µg/m³2026-08-22: 7.4 µg/m³2026-08-23: 22.4 µg/m³2026-08-24: 0.3 µg/m³2026-08-25: 3.7 µg/m³2026-08-26: 10.0 µg/m³2026-08-27: 9.9 µg/m³2026-08-28: 2.0 µg/m³2026-08-29: 5.3 µg/m³2026-08-30: 21.0 µg/m³2026-08-31: 20.9 µg/m³2026-09-01: 23.6 µg/m³2026-09-02: 21.0 µg/m³2026-09-03: no data2026-09-04: no data2026-09-05: 3.9 µg/m³2026-09-06: 1.4 µg/m³2026-09-07: 1.7 µg/m³2026-09-08: 4.5 µg/m³2026-09-09: 13.0 µg/m³2026-09-10: 1.6 µg/m³2026-09-11: 0.9 µg/m³2026-09-12: 10.0 µg/m³2026-09-13: 9.6 µg/m³2026-09-14: 0.2 µg/m³2026-09-15: 2.1 µg/m³2026-09-16: 5.9 µg/m³2026-09-17: 3.7 µg/m³2026-09-18: 0.1 µg/m³2026-09-19: 1.6 µg/m³2026-09-20: no data2026-09-21: no data2026-09-22: no data2026-09-23: no data2026-09-24: no data2026-09-25: no data2026-09-26: no data2026-09-27: no data2026-09-28: no data2026-09-29: no data2026-09-30: no data
Good 0–9.0Moderate 9.1+Unhealthy for sensitive groups 35.5+Unhealthy 55.5+Very unhealthy 125.5+Hazardous 225.5+No data

77 of 321 measured days were over the WHO 24-hour guideline.

Daily world rank

#1#2419OctNovDecJanFebMarAprMayJunJulAugSep

Rank on each day's board (1 = most polluted city that day).

2026 against 2025, month by month

15Jan 2026: 11.9 µg/m³JanFeb 2026: 12.6 µg/m³FebMar 2026: 11.7 µg/m³MarApr 2026: 6.3 µg/m³AprMay 2026: 6.3 µg/m³MayJun 2026: 7.3 µg/m³JunJul 2026: 37.9 µg/m³JulAug 2026: 11.2 µg/m³AugSep 2025: 20.3 µg/m³Sep 2026: 6.2 µg/m³SepOct 2025: 8.4 µg/m³OctNov 2025: 8.2 µg/m³NovDec 2025: 12.1 µg/m³Dec

Faded bars: 2025. A month shows once it has 10 measured days.

Monitors

StationOperatorType
Madison HeightsCC BY 4.0AirGradientLow-cost
S Campbell Rd & E 3rd StCC BY 4.0John MLow-cost
Royal OakCC BY 4.0AirGradientLow-cost

No reference monitor here, so the value is the median of low-cost sensors (at least two reporting each hour). Low-cost sensors can read high in humid air. Data via OpenAQ; licences as listed. How we rank. Embed this on your site.

Other cities in United States

Calexico 23.0Jurupa Valley 12.9Riverside 12.3Little Rock 12.2Hanford 11.9Oceanside 11.8Laredo 11.4Shreveport 11.0Wake Forest 11.0Corcoran 11.0Fontana 11.0West Memphis 10.9

30-day averages, µg/m³. All of United States →

Updated 2026-10-01 08:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.