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
10.20 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
44.99 μg/m³
0
55
155
255
425
605+
31.04 ppb
0
55
71
86
201
201+
0.47 ppb
0
36
76
186
605
1005+
3.87 ppb
0
54
101
361
1250
2050+
0.26 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Altoona, Pennsylvania
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AQI 54
Moderate
10.66μg/m³
PM2.5
47.23μg/m³
PM10
31.11ppb
O3
0.38ppb
SO2
2.97ppb
NO2
0.28ppm
CO
AQI 54
Moderate
11.08μg/m³
PM2.5
44.02μg/m³
PM10
38.05ppb
O3
0.33ppb
SO2
2.93ppb
NO2
0.28ppm
CO
AQI 54
Moderate
10.60μg/m³
PM2.5
47.02μg/m³
PM10
27.06ppb
O3
0.43ppb
SO2
2.25ppb
NO2
0.28ppm
CO
AQI 54
Moderate
11.02μg/m³
PM2.5
48.29μg/m³
PM10
36.27ppb
O3
0.33ppb
SO2
2.93ppb
NO2
0.28ppm
CO
AQI 54
Moderate
11.01μg/m³
PM2.5
48.60μg/m³
PM10
36.16ppb
O3
0.33ppb
SO2
2.93ppb
NO2
0.28ppm
CO
AQI 54
Moderate
11.01μg/m³
PM2.5
48.60μg/m³
PM10
36.16ppb
O3
0.33ppb
SO2
2.93ppb
NO2
0.28ppm
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 01:00:00 on 2026-08-10.
In the last 24 hours, the best air quality in Altoona, Pennsylvania was observed at 03:00:00 on 2026-08-10.
As of now, the AQI in Altoona, Pennsylvania is 54, 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 10.603 μg/m3.
The PM10 concentration in Altoona, Pennsylvania is 47.005 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Altoona, Pennsylvania is 0.281 ppm.
Currently, Altoona, Pennsylvania has a sulfur dioxide (SO2) concentration of 0.371 ppb.
The current ozone (O3) level in Altoona, Pennsylvania at the moment is 31.02 ppm.
Nitrogen dioxide (NO2) level in Altoona, Pennsylvania at the moment is 2.978 ppb.
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