Stay updated with real-time air quality in Worcester, 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)
75
Moderate
Worcester, Pennsylvania
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
21.54 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
95.28 μg/m³
0
55
155
255
425
605+
6.22 ppb
0
55
71
86
201
201+
1.18 ppb
0
36
76
186
605
1005+
25.49 ppb
0
54
101
361
1250
2050+
0.82 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Worcester, Pennsylvania
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AQI 75
Moderate
21.63μg/m³
PM2.5
95.19μg/m³
PM10
5.78ppb
O3
0.85ppb
SO2
17.27ppb
NO2
0.70ppm
CO
AQI 75
Moderate
22.40μg/m³
PM2.5
92.51μg/m³
PM10
3.26ppb
O3
1.16ppb
SO2
23.83ppb
NO2
0.66ppm
CO
AQI 75
Moderate
21.85μg/m³
PM2.5
95.23μg/m³
PM10
5.66ppb
O3
0.83ppb
SO2
18.52ppb
NO2
0.70ppm
CO
AQI 77
Moderate
23.00μg/m³
PM2.5
100.27μg/m³
PM10
3.78ppb
O3
1.00ppb
SO2
24.09ppb
NO2
0.67ppm
CO
AQI 77
Moderate
22.84μg/m³
PM2.5
99.70μg/m³
PM10
3.60ppb
O3
1.05ppb
SO2
23.84ppb
NO2
0.66ppm
CO
AQI 74
Moderate
21.02μg/m³
PM2.5
101.41μg/m³
PM10
5.75ppb
O3
0.84ppb
SO2
19.56ppb
NO2
0.70ppm
CO
Air quality data and pollutant measurements for Pennsylvania, 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 Worcester, Pennsylvania is updated every hour.
The worst air quality in Worcester, Pennsylvania in the last 24 hours was observed at 07:00:00 on 2025-12-07.
In the last 24 hrs, the best air quality in Worcester, Pennsylvania was observed at 10:00:00 on 2025-12-06.
The current air quality in Worcester, Pennsylvania is 75, categorized as Moderate based on real-time data.
The most common pollutant in Worcester, Pennsylvania is PM2.5.
If the air quality in Worcester, Pennsylvania is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Worcester, Pennsylvania is 21.536 μg/m3.
The current PM10 concentration at Worcester, Pennsylvania is 95.275 μg/m3.
The current carbon monoxide (CO) concentration at Worcester, Pennsylvania is 0.824 ppm.
The current sulfur dioxide (SO2) concentration at Worcester, Pennsylvania is 1.181 ppb.
The current ozone (O3) concentration at Worcester, Pennsylvania is 6.222 ppm.
The current nitrogen dioxide (NO2) concentration at Worcester, Pennsylvania is 25.488 ppb.
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