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)
24
Good
Caln, Pennsylvania
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.66 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.80 μg/m³
0
55
155
255
425
605+
25.01 ppb
0
55
71
86
201
201+
0.78 ppb
0
36
76
186
605
1005+
25.33 ppb
0
54
101
361
1250
2050+
0.32 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Caln, Pennsylvania
Caln, Pennsylvania
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AQI 26
Good
3.79μg/m³
PM2.5
10.85μg/m³
PM10
28.32ppb
O3
0.78ppb
SO2
25.56ppb
NO2
0.32ppm
CO
AQI 24
Good
3.15μg/m³
PM2.5
13.80μg/m³
PM10
25.03ppb
O3
0.78ppb
SO2
25.09ppb
NO2
0.32ppm
CO
AQI 24
Good
3.54μg/m³
PM2.5
15.68μg/m³
PM10
25.10ppb
O3
0.79ppb
SO2
24.98ppb
NO2
0.32ppm
CO
AQI 24
Good
3.56μg/m³
PM2.5
15.44μg/m³
PM10
25.20ppb
O3
0.97ppb
SO2
24.88ppb
NO2
0.32ppm
CO
AQI 24
Good
3.55μg/m³
PM2.5
15.28μg/m³
PM10
25.11ppb
O3
0.79ppb
SO2
24.75ppb
NO2
0.33ppm
CO
AQI 24
Good
3.53μg/m³
PM2.5
15.14μg/m³
PM10
24.98ppb
O3
0.79ppb
SO2
24.67ppb
NO2
0.33ppm
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 03:00:00 on 2026-01-22.
The best air quality in Caln, Pennsylvania was recorded at 05:00:00 on 2026-01-23.
The real-time air quality index in Caln, Pennsylvania is 24, currently categorized as Good.
The most common pollutant in Caln, Pennsylvania is NO2.
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 3.66 μg/m3.
The current PM10 levels in Caln, Pennsylvania are 13.799 μg/m3.
The current carbon monoxide (CO) level in Caln, Pennsylvania is 0.32 ppm.
The current sulfur dioxide (SO2) levels in Caln, Pennsylvania are 0.778 ppb.
The current ozone (O3) levels at Caln, Pennsylvania is 25.012 ppm.
The current nitrogen dioxide (NO2) levels at Caln, Pennsylvania is 25.328 ppb.
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