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)
19
Good
Mill Creek, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.60 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
7.71 μg/m³
0
55
155
255
425
605+
20.62 ppb
0
55
71
86
201
201+
0.10 ppb
0
36
76
186
605
1005+
3.56 ppb
0
54
101
361
1250
2050+
0.11 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Mill Creek, Washington
Mill Creek, Washington
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AQI 20
Good
2.56μg/m³
PM2.5
8.15μg/m³
PM10
21.64ppb
O3
0.10ppb
SO2
3.54ppb
NO2
0.11ppm
CO
AQI 19
Good
2.47μg/m³
PM2.5
6.55μg/m³
PM10
19.81ppb
O3
0.10ppb
SO2
3.56ppb
NO2
0.11ppm
CO
AQI 18
Good
2.46μg/m³
PM2.5
5.93μg/m³
PM10
18.95ppb
O3
0.10ppb
SO2
3.57ppb
NO2
0.11ppm
CO
AQI 19
Good
2.76μg/m³
PM2.5
8.21μg/m³
PM10
20.04ppb
O3
0.10ppb
SO2
3.58ppb
NO2
0.11ppm
CO
AQI 24
Good
3.60μg/m³
PM2.5
13.76μg/m³
PM10
25.65ppb
O3
0.10ppb
SO2
3.78ppb
NO2
0.11ppm
CO
AQI 18
Good
2.48μg/m³
PM2.5
5.96μg/m³
PM10
19.11ppb
O3
0.10ppb
SO2
3.55ppb
NO2
0.11ppm
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 12:00:00 on 2026-04-21.
In the last 24 hours, the best air quality in Mill Creek, Washington was observed at 07:00:00 on 2026-04-22.
As of now, the AQI in Mill Creek, Washington is 19, 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 2.596 μg/m3.
The PM10 concentration in Mill Creek, Washington is 7.71 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Mill Creek, Washington is 0.111 ppm.
Currently, Mill Creek, Washington has a sulfur dioxide (SO2) concentration of 0.1 ppb.
The current ozone (O3) level in Mill Creek, Washington at the moment is 20.618 ppm.
Nitrogen dioxide (NO2) level in Mill Creek, Washington at the moment is 3.559 ppb.
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