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)
43
Good
Worcester, Pennsylvania
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.20 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.54 μg/m³
0
55
155
255
425
605+
45.85 ppb
0
55
71
86
201
201+
0.65 ppb
0
36
76
186
605
1005+
7.05 ppb
0
54
101
361
1250
2050+
0.33 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Worcester, Pennsylvania
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AQI 33
Good
4.27μg/m³
PM2.5
16.32μg/m³
PM10
35.51ppb
O3
0.41ppb
SO2
5.77ppb
NO2
0.34ppm
CO
AQI 38
Good
4.68μg/m³
PM2.5
20.05μg/m³
PM10
40.62ppb
O3
0.55ppb
SO2
8.78ppb
NO2
0.38ppm
CO
AQI 38
Good
4.66μg/m³
PM2.5
16.49μg/m³
PM10
41.16ppb
O3
0.42ppb
SO2
6.09ppb
NO2
0.34ppm
CO
AQI 39
Good
3.95μg/m³
PM2.5
17.52μg/m³
PM10
41.65ppb
O3
0.51ppb
SO2
7.62ppb
NO2
0.37ppm
CO
AQI 38
Good
4.23μg/m³
PM2.5
18.78μg/m³
PM10
41.35ppb
O3
0.53ppb
SO2
8.06ppb
NO2
0.37ppm
CO
AQI 39
Good
5.43μg/m³
PM2.5
20.06μg/m³
PM10
42.39ppb
O3
0.45ppb
SO2
6.37ppb
NO2
0.34ppm
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 02:00:00 on 2026-03-09.
In the last 24 hrs, the best air quality in Worcester, Pennsylvania was observed at 03:00:00 on 2026-03-09.
The current air quality in Worcester, Pennsylvania is 43, categorized as Good based on real-time data.
The most common pollutant in Worcester, Pennsylvania is O3.
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 4.197 μg/m3.
The current PM10 concentration at Worcester, Pennsylvania is 18.539 μg/m3.
The current carbon monoxide (CO) concentration at Worcester, Pennsylvania is 0.332 ppm.
The current sulfur dioxide (SO2) concentration at Worcester, Pennsylvania is 0.651 ppb.
The current ozone (O3) concentration at Worcester, Pennsylvania is 45.847 ppm.
The current nitrogen dioxide (NO2) concentration at Worcester, Pennsylvania is 7.05 ppb.
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