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)
39
Good
Altoona, Pennsylvania
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.40 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.01 μg/m³
0
55
155
255
425
605+
42.02 ppb
0
55
71
86
201
201+
0.43 ppb
0
36
76
186
605
1005+
1.38 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Altoona, Pennsylvania
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AQI 39
Good
2.42μg/m³
PM2.5
10.11μg/m³
PM10
42.15ppb
O3
0.44ppb
SO2
1.40ppb
NO2
0.20ppm
CO
AQI 41
Good
3.00μg/m³
PM2.5
13.52μg/m³
PM10
44.30ppb
O3
0.32ppb
SO2
1.33ppb
NO2
0.27ppm
CO
AQI 40
Good
2.50μg/m³
PM2.5
10.01μg/m³
PM10
43.02ppb
O3
0.48ppb
SO2
2.00ppb
NO2
0.22ppm
CO
AQI 42
Good
3.08μg/m³
PM2.5
13.91μg/m³
PM10
44.88ppb
O3
0.32ppb
SO2
1.27ppb
NO2
0.27ppm
CO
AQI 42
Good
3.09μg/m³
PM2.5
13.96μg/m³
PM10
44.94ppb
O3
0.32ppb
SO2
1.26ppb
NO2
0.27ppm
CO
AQI 42
Good
3.09μg/m³
PM2.5
13.96μg/m³
PM10
44.94ppb
O3
0.32ppb
SO2
1.26ppb
NO2
0.27ppm
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 02:00:00 on 2026-03-09.
In the last 24 hours, the best air quality in Altoona, Pennsylvania was observed at 11:00:00 on 2026-03-09.
As of now, the AQI in Altoona, Pennsylvania is 39, indicating Good conditions.
Altoona, Pennsylvania air has the highest levels of O3.
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 2.403 μg/m3.
The PM10 concentration in Altoona, Pennsylvania is 10.013 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Altoona, Pennsylvania is 0.204 ppm.
Currently, Altoona, Pennsylvania has a sulfur dioxide (SO2) concentration of 0.434 ppb.
The current ozone (O3) level in Altoona, Pennsylvania at the moment is 42.016 ppm.
Nitrogen dioxide (NO2) level in Altoona, Pennsylvania at the moment is 1.384 ppb.
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