Stay updated with real-time air quality in Union HillNovelty Hill, 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)
54
Moderate
Union HillNovelty Hill, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
10.80 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
39.28 μg/m³
0
55
155
255
425
605+
2.93 ppb
0
55
71
86
201
201+
0.49 ppb
0
36
76
186
605
1005+
13.29 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Union HillNovelty Hill, Washington
Union HillNovelty Hill, Washington
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AQI 54
Moderate
10.77μg/m³
PM2.5
22.95μg/m³
PM10
4.27ppb
O3
0.44ppb
SO2
19.80ppb
NO2
0.37ppm
CO
AQI 56
Moderate
11.70μg/m³
PM2.5
33.14μg/m³
PM10
4.43ppb
O3
0.48ppb
SO2
15.63ppb
NO2
0.37ppm
CO
AQI 44
Good
8.42μg/m³
PM2.5
35.02μg/m³
PM10
4.96ppb
O3
0.52ppb
SO2
17.61ppb
NO2
0.38ppm
CO
AQI 54
Moderate
10.64μg/m³
PM2.5
28.86μg/m³
PM10
3.47ppb
O3
0.43ppb
SO2
17.65ppb
NO2
0.37ppm
CO
AQI 52
Moderate
9.93μg/m³
PM2.5
37.50μg/m³
PM10
4.53ppb
O3
0.51ppb
SO2
16.75ppb
NO2
0.39ppm
CO
AQI 52
Moderate
10.37μg/m³
PM2.5
39.49μg/m³
PM10
4.79ppb
O3
0.53ppb
SO2
17.74ppb
NO2
0.39ppm
CO
Air quality data and pollutant measurements for Washington, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Union Hillnovelty Hill, Washington is updated every hour.
The worst air quality in Union Hillnovelty Hill, Washington in the last 24 hours was observed at 03:00:00 on 2026-10-08.
In the last 24 hrs, the best air quality in Union Hillnovelty Hill, Washington was observed at 07:00:00 on 2026-10-07.
The current air quality in Union Hillnovelty Hill, Washington is 54, categorized as Moderate based on real-time data.
The most common pollutant in Union Hillnovelty Hill, Washington is PM2.5.
If the air quality in Union Hillnovelty Hill, Washington is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Union Hillnovelty Hill, Washington is 10.773 μg/m3.
The current PM10 concentration at Union Hillnovelty Hill, Washington is 22.952 μg/m3.
The current carbon monoxide (CO) concentration at Union Hillnovelty Hill, Washington is 0.366 ppm.
The current sulfur dioxide (SO2) concentration at Union Hillnovelty Hill, Washington is 0.442 ppb.
The current ozone (O3) concentration at Union Hillnovelty Hill, Washington is 4.272 ppm.
The current nitrogen dioxide (NO2) concentration at Union Hillnovelty Hill, Washington is 19.798 ppb.
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