Stay updated with real-time air quality in Washington, Pennsylvania 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)
40
Good
Washington, Pennsylvania
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.62 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.03 μg/m³
0
55
155
255
425
605+
43.23 ppb
0
55
71
86
201
201+
3.17 ppb
0
36
76
186
605
1005+
4.52 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Washington, Pennsylvania
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AQI 40
Good
2.73μg/m³
PM2.5
11.35μg/m³
PM10
42.64ppb
O3
2.81ppb
SO2
4.34ppb
NO2
0.18ppm
CO
AQI 42
Good
2.70μg/m³
PM2.5
11.28μg/m³
PM10
44.71ppb
O3
2.82ppb
SO2
4.14ppb
NO2
0.18ppm
CO
AQI 38
Good
2.97μg/m³
PM2.5
12.80μg/m³
PM10
40.88ppb
O3
2.78ppb
SO2
3.21ppb
NO2
0.18ppm
CO
AQI 43
Good
2.65μg/m³
PM2.5
11.19μg/m³
PM10
46.08ppb
O3
2.81ppb
SO2
3.84ppb
NO2
0.17ppm
CO
AQI 40
Good
3.06μg/m³
PM2.5
12.70μg/m³
PM10
42.83ppb
O3
2.79ppb
SO2
3.77ppb
NO2
0.18ppm
CO
AQI 39
Good
2.96μg/m³
PM2.5
12.69μg/m³
PM10
41.55ppb
O3
2.78ppb
SO2
3.77ppb
NO2
0.18ppm
CO
Air quality measurements for Pennsylvania, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Washington, Pennsylvania is updated on an hourly basis.
The worst air quality in Washington, Pennsylvania was recorded at 03:00:00 on 2026-03-09.
The best air quality in Washington, Pennsylvania was recorded at 01:00:00 on 2026-03-09.
The real-time air quality index in Washington, Pennsylvania is 40, currently categorized as Good.
The most common pollutant in Washington, Pennsylvania is O3.
If the air quality in Washington, Pennsylvania is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Washington, Pennsylvania at present are 2.62 μg/m3.
The current PM10 levels in Washington, Pennsylvania are 11.028 μg/m3.
The current carbon monoxide (CO) level in Washington, Pennsylvania is 0.195 ppm.
The current sulfur dioxide (SO2) levels in Washington, Pennsylvania are 3.166 ppb.
The current ozone (O3) levels at Washington, Pennsylvania is 43.225 ppm.
The current nitrogen dioxide (NO2) levels at Washington, Pennsylvania is 4.518 ppb.
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