Stay updated with real-time air quality in Mill Creek, Washington featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
31
Good
Mill Creek, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
1.83 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
7.60 μg/m³
0
55
155
255
425
605+
33.44 ppb
0
55
71
86
201
201+
0.13 ppb
0
36
76
186
605
1005+
12.11 ppb
0
54
101
361
1250
2050+
0.32 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Mill Creek, Washington
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AQI 30
Good
1.52μg/m³
PM2.5
6.61μg/m³
PM10
31.81ppb
O3
0.12ppb
SO2
8.65ppb
NO2
0.32ppm
CO
AQI 30
Good
1.46μg/m³
PM2.5
6.31μg/m³
PM10
31.82ppb
O3
0.12ppb
SO2
8.17ppb
NO2
0.32ppm
CO
AQI 30
Good
1.44μg/m³
PM2.5
6.21μg/m³
PM10
31.84ppb
O3
0.12ppb
SO2
7.89ppb
NO2
0.32ppm
CO
AQI 30
Good
1.59μg/m³
PM2.5
6.95μg/m³
PM10
31.80ppb
O3
0.12ppb
SO2
7.92ppb
NO2
0.32ppm
CO
AQI 30
Good
1.94μg/m³
PM2.5
5.97μg/m³
PM10
32.49ppb
O3
0.12ppb
SO2
5.12ppb
NO2
0.32ppm
CO
AQI 30
Good
1.47μg/m³
PM2.5
6.24μg/m³
PM10
31.85ppb
O3
0.12ppb
SO2
7.91ppb
NO2
0.32ppm
CO
Air quality and pollutant data for Washington, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Mill Creek, Washington is updated every hour for accuracy.
In the past 24 hours, the air quality in Mill Creek, Washington was at its worst at 06:00:00 on 2026-03-15.
In the last 24 hours, the best air quality in Mill Creek, Washington was observed at 04:00:00 on 2026-03-15.
As of now, the AQI in Mill Creek, Washington is 31, indicating Good conditions.
Mill Creek, Washington air has the highest levels of O3.
Poor air quality in Mill Creek, Washington means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Mill Creek, Washington are currently 1.832 μg/m3.
The PM10 concentration in Mill Creek, Washington is 7.596 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Mill Creek, Washington is 0.316 ppm.
Currently, Mill Creek, Washington has a sulfur dioxide (SO2) concentration of 0.127 ppb.
The current ozone (O3) level in Mill Creek, Washington at the moment is 33.436 ppm.
Nitrogen dioxide (NO2) level in Mill Creek, Washington at the moment is 12.111 ppb.
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