Stay updated with real-time air quality in Caln, 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)
54
Moderate
Caln, Pennsylvania
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
11.44 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
45.19 μg/m³
0
55
155
255
425
605+
19.60 ppb
0
55
71
86
201
201+
0.37 ppb
0
36
76
186
605
1005+
7.56 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Caln, Pennsylvania
Caln, Pennsylvania
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AQI 56
Moderate
11.95μg/m³
PM2.5
58.89μg/m³
PM10
19.98ppb
O3
0.44ppb
SO2
8.35ppb
NO2
0.27ppm
CO
AQI 56
Moderate
11.68μg/m³
PM2.5
49.74μg/m³
PM10
26.13ppb
O3
0.44ppb
SO2
10.04ppb
NO2
0.28ppm
CO
AQI 54
Moderate
11.20μg/m³
PM2.5
49.29μg/m³
PM10
22.41ppb
O3
0.45ppb
SO2
10.01ppb
NO2
0.28ppm
CO
AQI 54
Moderate
10.70μg/m³
PM2.5
49.31μg/m³
PM10
22.31ppb
O3
0.46ppb
SO2
9.98ppb
NO2
0.28ppm
CO
AQI 54
Moderate
10.69μg/m³
PM2.5
49.02μg/m³
PM10
21.62ppb
O3
0.44ppb
SO2
8.38ppb
NO2
0.28ppm
CO
AQI 54
Moderate
10.71μg/m³
PM2.5
48.76μg/m³
PM10
20.28ppb
O3
0.42ppb
SO2
8.28ppb
NO2
0.28ppm
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 Caln, Pennsylvania is updated on an hourly basis.
The worst air quality in Caln, Pennsylvania was recorded at 10:00:00 on 2026-08-12.
The best air quality in Caln, Pennsylvania was recorded at 06:00:00 on 2026-08-13.
The real-time air quality index in Caln, Pennsylvania is 54, currently categorized as Moderate.
The most common pollutant in Caln, Pennsylvania is PM2.5.
If the air quality in Caln, Pennsylvania is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Caln, Pennsylvania at present are 11.438 μg/m3.
The current PM10 levels in Caln, Pennsylvania are 45.191 μg/m3.
The current carbon monoxide (CO) level in Caln, Pennsylvania is 0.276 ppm.
The current sulfur dioxide (SO2) levels in Caln, Pennsylvania are 0.369 ppb.
The current ozone (O3) levels at Caln, Pennsylvania is 19.599 ppm.
The current nitrogen dioxide (NO2) levels at Caln, Pennsylvania is 7.558 ppb.
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