Air Quality in Altoona, United States

Drizzle
21.3°C · 85.4% humidity
21.3°
Feels 21.3°
69
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station

Nearby Monitoring Stations

AQI Forecast
25 5pm
25
25
69 8pm
57
48
41 11pm
37
32
30 2am
28
27
26 5am
26
25
25 8am
25
24
25 11am
25
25
25 2pm
25
25
AD 728×90

Air Quality Index Trend

48h · 1 stn

Altoona's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Altoona is 1.4× the WHO 24-hour guideline of 15 µg/m³.

85.4%
Humidity
17.8 km/h
Wind NNE
1014.3 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
69
20.7 µg/m³
PM10
31
34.3 µg/m³
050100150200300500

What is the weather forecast for Altoona?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.520.7 µg/m³ ×1.4 WHO
Moderate
PM1034.3 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (1 station within 25 km)
20.7
Median
20.7
Average
20.7
Low
20.7
High
PM2.5 µg/m³ · Model: 16.55 · Bias: -4.2

What is the 7-day forecast for Altoona?

07-22
21.8° 16.9°
4.88 mm
07-23
22.5° 14.9°
5.44 mm
07-24
25.6° 11.9°
2.31 mm
07-25
25.8° 17.5°
1.56 mm
07-26
27.2° 14.6°
5.12 mm
07-27
25.5° 20.2°
0.13 mm
07-28
31.7° 18.8°
4.75 mm
Both models agree Avg diff: 3.0°C

Where are air quality stations near Altoona?

75
Altoona, Pennsylvania, USA
0.6 km PM2.5: 23.5 µg/m³

What cities are near Altoona?

29 Johnstown 37 State College 67 Chambersburg 47 Cumberland 72 Carlisle 34 Murrysville 71 Hagerstown 32 Plum 32 Monroeville 31 Penn Hills
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-22T00:55 UTC.