Stay updated with real-time air quality in Altoona, 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)
52
Moderate
Altoona, Pennsylvania
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
10.30 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
46.04 μg/m³
0
55
155
255
425
605+
22.02 ppb
0
55
71
86
201
201+
0.66 ppb
0
36
76
186
605
1005+
5.08 ppb
0
54
101
361
1250
2050+
0.32 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Altoona, Pennsylvania
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AQI 52
Moderate
10.34μg/m³
PM2.5
46.35μg/m³
PM10
22.17ppb
O3
0.67ppb
SO2
5.14ppb
NO2
0.32ppm
CO
AQI 52
Moderate
9.84μg/m³
PM2.5
53.88μg/m³
PM10
29.54ppb
O3
0.76ppb
SO2
4.71ppb
NO2
0.34ppm
CO
AQI 54
Moderate
10.92μg/m³
PM2.5
48.10μg/m³
PM10
20.03ppb
O3
0.67ppb
SO2
7.61ppb
NO2
0.27ppm
CO
AQI 52
Moderate
10.31μg/m³
PM2.5
47.14μg/m³
PM10
30.69ppb
O3
0.93ppb
SO2
4.74ppb
NO2
0.34ppm
CO
AQI 52
Moderate
10.36μg/m³
PM2.5
46.62μg/m³
PM10
30.86ppb
O3
0.94ppb
SO2
4.72ppb
NO2
0.34ppm
CO
AQI 52
Moderate
10.36μg/m³
PM2.5
46.62μg/m³
PM10
30.86ppb
O3
0.94ppb
SO2
4.72ppb
NO2
0.34ppm
CO
Air quality and pollutant data for Pennsylvania, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Altoona, Pennsylvania is updated every hour for accuracy.
In the past 24 hours, the air quality in Altoona, Pennsylvania was at its worst at 10:00:00 on 2025-12-06.
In the last 24 hours, the best air quality in Altoona, Pennsylvania was observed at 06:00:00 on 2025-12-06.
As of now, the AQI in Altoona, Pennsylvania is 52, indicating Moderate conditions.
Altoona, Pennsylvania air has the highest levels of PM2.5.
Poor air quality in Altoona, Pennsylvania means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Altoona, Pennsylvania are currently 10.303 μg/m3.
The PM10 concentration in Altoona, Pennsylvania is 46.039 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Altoona, Pennsylvania is 0.317 ppm.
Currently, Altoona, Pennsylvania has a sulfur dioxide (SO2) concentration of 0.664 ppb.
The current ozone (O3) level in Altoona, Pennsylvania at the moment is 22.022 ppm.
Nitrogen dioxide (NO2) level in Altoona, Pennsylvania at the moment is 5.085 ppb.
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