SmogRank / United States / Washington

Air quality in Oak Harbor

Washington, United States. PM2.5 from 1 reference monitor, updated hourly. None of them reported in the last 24 hours.

No readings from Oak Harbor's monitors in the last two weeks. The history below shows what they measured before.

Rank, worst first

24 hours–not enough data
7 days–not enough data
30 days–not enough data
This year–not enough data

The last 12 months, day by day

1102031Oct 2025NovDecJan 2026FebMarAprMayJunJulAugSep2025-10-01: 2.4 µg/m³2025-10-02: 2.9 µg/m³2025-10-03: 2.5 µg/m³2025-10-04: 3.0 µg/m³2025-10-05: 3.1 µg/m³2025-10-06: 3.0 µg/m³2025-10-07: 3.7 µg/m³2025-10-08: 2.7 µg/m³2025-10-09: 2.2 µg/m³2025-10-10: 2.4 µg/m³2025-10-11: 2.5 µg/m³2025-10-12: 2.9 µg/m³2025-10-13: 2.9 µg/m³2025-10-14: 2.8 µg/m³2025-10-15: 3.4 µg/m³2025-10-16: 3.3 µg/m³2025-10-17: 3.5 µg/m³2025-10-18: 3.2 µg/m³2025-10-19: 2.7 µg/m³2025-10-20: 2.6 µg/m³2025-10-21: 2.0 µg/m³2025-10-22: 3.2 µg/m³2025-10-23: 4.6 µg/m³2025-10-24: 5.4 µg/m³2025-10-25: 2.7 µg/m³2025-10-26: 1.6 µg/m³2025-10-27: 2.7 µg/m³2025-10-28: 2.3 µg/m³2025-10-29: 5.1 µg/m³2025-10-30: 9.6 µg/m³2025-10-31: 7.6 µg/m³2025-11-01: 6.7 µg/m³2025-11-02: 8.4 µg/m³2025-11-03: 6.0 µg/m³2025-11-04: 4.3 µg/m³2025-11-05: 3.9 µg/m³2025-11-06: 3.3 µg/m³2025-11-07: 4.8 µg/m³2025-11-08: 3.3 µg/m³2025-11-09: 4.9 µg/m³2025-11-10: 5.8 µg/m³2025-11-11: 5.5 µg/m³2025-11-12: 6.1 µg/m³2025-11-13: 8.4 µg/m³2025-11-14: no data2025-11-15: no data2025-11-16: no data2025-11-17: no data2025-11-18: no data2025-11-19: no data2025-11-20: no data2025-11-21: 4.5 µg/m³2025-11-22: 5.7 µg/m³2025-11-23: 3.9 µg/m³2025-11-24: 3.7 µg/m³2025-11-25: 4.8 µg/m³2025-11-26: 5.0 µg/m³2025-11-27: 4.2 µg/m³2025-11-28: 3.0 µg/m³2025-11-29: 2.4 µg/m³2025-11-30: 1.9 µg/m³2025-12-01: 3.2 µg/m³2025-12-02: 1.7 µg/m³2025-12-03: 1.5 µg/m³2025-12-04: 2.9 µg/m³2025-12-05: 3.5 µg/m³2025-12-06: 4.8 µg/m³2025-12-07: 3.5 µg/m³2025-12-08: 4.0 µg/m³2025-12-09: 6.0 µg/m³2025-12-10: 1.4 µg/m³2025-12-11: 1.8 µg/m³2025-12-12: 3.8 µg/m³2025-12-13: 8.2 µg/m³2025-12-14: 9.7 µg/m³2025-12-15: 5.1 µg/m³2025-12-16: 3.0 µg/m³2025-12-17: no data2025-12-18: 1.2 µg/m³2025-12-19: 0.1 µg/m³2025-12-20: 1.6 µg/m³2025-12-21: 1.3 µg/m³2025-12-22: 1.1 µg/m³2025-12-23: 1.4 µg/m³2025-12-24: 1.6 µg/m³2025-12-25: 1.4 µg/m³2025-12-26: 2.3 µg/m³2025-12-27: 2.6 µg/m³2025-12-28: 1.7 µg/m³2025-12-29: 2.2 µg/m³2025-12-30: 3.7 µg/m³2025-12-31: 3.6 µg/m³2026-01-01: 7.4 µg/m³2026-01-02: 5.1 µg/m³2026-01-03: 2.2 µg/m³2026-01-04: 3.0 µg/m³2026-01-05: 3.1 µg/m³2026-01-06: 3.2 µg/m³2026-01-07: 3.4 µg/m³2026-01-08: 3.4 µg/m³2026-01-09: 3.3 µg/m³2026-01-10: 4.2 µg/m³2026-01-11: 4.4 µg/m³2026-01-12: 5.1 µg/m³2026-01-13: 6.1 µg/m³2026-01-14: 4.2 µg/m³2026-01-15: 2.4 µg/m³2026-01-16: 2.8 µg/m³2026-01-17: 2.6 µg/m³2026-01-18: 4.0 µg/m³2026-01-19: 3.9 µg/m³2026-01-20: 5.2 µg/m³2026-01-21: 4.6 µg/m³2026-01-22: 7.2 µg/m³2026-01-23: 6.1 µg/m³2026-01-24: 7.4 µg/m³2026-01-25: 7.9 µg/m³2026-01-26: 8.5 µg/m³2026-01-27: 9.2 µg/m³2026-01-28: 5.7 µg/m³2026-01-29: 3.5 µg/m³2026-01-30: 2.8 µg/m³2026-01-31: 1.8 µg/m³2026-02-01: 2.4 µg/m³2026-02-02: 2.2 µg/m³2026-02-03: 2.4 µg/m³2026-02-04: 2.2 µg/m³2026-02-05: no data2026-02-06: 3.7 µg/m³2026-02-07: 4.1 µg/m³2026-02-08: 3.3 µg/m³2026-02-09: 1.4 µg/m³2026-02-10: 1.2 µg/m³2026-02-11: 1.0 µg/m³2026-02-12: 3.2 µg/m³2026-02-13: 0.8 µg/m³2026-02-14: 0.5 µg/m³2026-02-15: 1.9 µg/m³2026-02-16: 2.6 µg/m³2026-02-17: 1.3 µg/m³2026-02-18: 2.4 µg/m³2026-02-19: 0.8 µg/m³2026-02-20: 1.6 µg/m³2026-02-21: 0.3 µg/m³2026-02-22: 1.5 µg/m³2026-02-23: 1.9 µg/m³2026-02-24: 1.3 µg/m³2026-02-25: 2.2 µg/m³2026-02-26: 1.6 µg/m³2026-02-27: 2.1 µg/m³2026-02-28: 2.5 µg/m³2026-03-01: 2.1 µg/m³2026-03-02: 2.1 µg/m³2026-03-03: 1.5 µg/m³2026-03-04: no data2026-03-05: no data2026-03-06: no data2026-03-07: 0.9 µg/m³2026-03-08: 3.8 µg/m³2026-03-09: 2.3 µg/m³2026-03-10: 2.5 µg/m³2026-03-11: 1.3 µg/m³2026-03-12: 2.4 µg/m³2026-03-13: 1.2 µg/m³2026-03-14: 2.4 µg/m³2026-03-15: 1.7 µg/m³2026-03-16: 2.1 µg/m³2026-03-17: 2.0 µg/m³2026-03-18: 0.8 µg/m³2026-03-19: 1.1 µg/m³2026-03-20: 2.6 µg/m³2026-03-21: 2.2 µg/m³2026-03-22: 3.6 µg/m³2026-03-23: 2.8 µg/m³2026-03-24: 3.1 µg/m³2026-03-25: 1.9 µg/m³2026-03-26: 2.8 µg/m³2026-03-27: 2.5 µg/m³2026-03-28: 3.2 µg/m³2026-03-29: 1.7 µg/m³2026-03-30: 2.4 µg/m³2026-03-31: 2.3 µg/m³2026-04-01: 1.7 µg/m³2026-04-02: 2.6 µg/m³2026-04-03: 2.5 µg/m³2026-04-04: 2.9 µg/m³2026-04-05: 2.7 µg/m³2026-04-06: 3.4 µg/m³2026-04-07: 4.7 µg/m³2026-04-08: 3.6 µg/m³2026-04-09: 3.6 µg/m³2026-04-10: 4.7 µg/m³2026-04-11: 4.0 µg/m³2026-04-12: 3.3 µg/m³2026-04-13: 2.7 µg/m³2026-04-14: 1.8 µg/m³2026-04-15: 2.9 µg/m³2026-04-16: 2.0 µg/m³2026-04-17: 3.7 µg/m³2026-04-18: 3.6 µg/m³2026-04-19: 4.4 µg/m³2026-04-20: 5.1 µg/m³2026-04-21: 4.3 µg/m³2026-04-22: no data2026-04-23: no data2026-04-24: no data2026-04-25: no data2026-04-26: no data2026-04-27: no data2026-04-28: no data2026-04-29: no data2026-04-30: no data2026-05-01: no data2026-05-02: no data2026-05-03: no data2026-05-04: no data2026-05-05: no data2026-05-06: no data2026-05-07: no data2026-05-08: no data2026-05-09: no data2026-05-10: no data2026-05-11: no data2026-05-12: no data2026-05-13: no data2026-05-14: no data2026-05-15: no data2026-05-16: no data2026-05-17: no data2026-05-18: no data2026-05-19: no data2026-05-20: no data2026-05-21: no data2026-05-22: no data2026-05-23: no data2026-05-24: no data2026-05-25: no data2026-05-26: no data2026-05-27: no data2026-05-28: no data2026-05-29: no data2026-05-30: no data2026-05-31: no data2026-06-01: no data2026-06-02: no data2026-06-03: no data2026-06-04: no data2026-06-05: no data2026-06-06: no data2026-06-07: no data2026-06-08: no data2026-06-09: no data2026-06-10: no data2026-06-11: no data2026-06-12: no data2026-06-13: no data2026-06-14: no data2026-06-15: no data2026-06-16: no data2026-06-17: no data2026-06-18: no data2026-06-19: no data2026-06-20: no data2026-06-21: no data2026-06-22: no data2026-06-23: no data2026-06-24: no data2026-06-25: no data2026-06-26: no data2026-06-27: no data2026-06-28: no data2026-06-29: no data2026-06-30: no data2026-07-01: no data2026-07-02: no data2026-07-03: no data2026-07-04: no data2026-07-05: no data2026-07-06: no data2026-07-07: no data2026-07-08: no data2026-07-09: no data2026-07-10: no data2026-07-11: no data2026-07-12: no data2026-07-13: no data2026-07-14: no data2026-07-15: no data2026-07-16: no data2026-07-17: no data2026-07-18: no data2026-07-19: no data2026-07-20: no data2026-07-21: no data2026-07-22: no data2026-07-23: no data2026-07-24: no data2026-07-25: no data2026-07-26: no data2026-07-27: no data2026-07-28: no data2026-07-29: no data2026-07-30: no data2026-07-31: no data2026-08-01: no data2026-08-02: no data2026-08-03: no data2026-08-04: no data2026-08-05: no data2026-08-06: no data2026-08-07: no data2026-08-08: no data2026-08-09: no data2026-08-10: no data2026-08-11: no data2026-08-12: no data2026-08-13: no data2026-08-14: no data2026-08-15: no data2026-08-16: no data2026-08-17: no data2026-08-18: no data2026-08-19: no data2026-08-20: no data2026-08-21: no data2026-08-22: no data2026-08-23: no data2026-08-24: no data2026-08-25: no data2026-08-26: no data2026-08-27: no data2026-08-28: no data2026-08-29: no data2026-08-30: no data2026-08-31: no data2026-09-01: no data2026-09-02: 2.0 µg/m³2026-09-03: 2.2 µg/m³2026-09-04: 3.4 µg/m³2026-09-05: 4.9 µg/m³2026-09-06: 3.9 µg/m³2026-09-07: 4.1 µg/m³2026-09-08: no data2026-09-09: no data2026-09-10: no data2026-09-11: no data2026-09-12: no data2026-09-13: no data2026-09-14: no data2026-09-15: no data2026-09-16: no data2026-09-17: no data2026-09-18: no data2026-09-19: no data2026-09-20: 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
0 of 197 measured days were over the WHO 24-hour guideline (15 µg/m³). One row per month, one square per local day.
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

Hour by hour

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

Its world rank, day by day

#1#2396OctNovDecJanFebMarAprMayJunJulAug
Rank on each day's board (1 = most polluted city that day).

2026 against 2025, month by month

15Jan 2025: 2.7 µg/m³Jan 2026: 4.6 µg/m³JanFeb 2025: 2.8 µg/m³Feb 2026: 1.9 µg/m³FebMar 2025: 2.4 µg/m³Mar 2026: 2.2 µg/m³MarApr 2025: 3.2 µg/m³Apr 2026: 3.3 µg/m³AprMay 2025: 2.1 µg/m³MayJun 2025: 2.2 µg/m³JunJul 2025: 2.6 µg/m³JulAug 2025: 2.8 µg/m³AugSep 2025: 3.1 µg/m³SepOct 2025: 3.4 µg/m³OctNov 2025: 4.8 µg/m³NovDec 2025: 3.0 µg/m³Dec
Faded bars: 2025. A month shows once it has 10 measured days.

Monitors

StationOperatorType
NWCAA - Oak Harbor Public WorksCC BY 4.0Northwest Clean Air AgencyLow-cost
Oak Harbor-Goldie RdUS Public DomainAirNowReference

The city's value is the median of its reference monitors each hour, when at least a third of them report (three are always enough); low-cost sensors are listed but not counted when reference monitors exist. Data via OpenAQ; licences as listed. How we rank. Embed this on your site.

Other cities in United States

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

Updated 2026-10-01 23:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.