What is the air quality in Norristown today?

The current Air Quality Index (AQI) in Norristown is 28 (Good). PM2.5 concentration is 6.76 µg/m³.

What is the temperature in Norristown right now?

The current temperature in Norristown is 15.7°C (feels like 15.7°C). Humidity is 39.8% and wind speed is 23.2 km/h.

Is it safe to go outside in Norristown?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Norristown, United States

Clear

15.7°C · 39.8% humidity

15.7°

Feels 15.7°

Good

Air quality is satisfactory. Enjoy outdoor activities.

53 stations

Nearby Monitoring Stations

AQI Forecast

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Station readings

Air Quality Index Trend

48h · 1 stn

View full history →

Norristown's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

39.8%

Humidity

23.2 km/h

Wind WNW

1022.1 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

6.76 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Norristown?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station

PM2.56.76 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (53 stations within 25 km)

6.76

Median

4.96

Average

3.6

Low

8.9

High

PM2.5 µg/m³ · Model: 6.5 · Bias: -0.3

What is the 7-day forecast for Norristown?

10-20

15.7° 6.2°

4.44 mm

10-21

20.8° 6.8°

0.25 mm

10-22

19.6° 11.4°

2.12 mm

10-23

15.8° 5.8°

10-24

16.5° 8.6°

10-25

19.5° 6.5°

1.06 mm

10-26

14.2° 9.6°

3.25 mm

Both models agree Avg diff: 3.7°C

Where are air quality stations near Norristown?

Norristown, Pennsylvania, USA

2.8 km PM2.5: 8.9 µg/m³

C077 ( 945 Manatawna Ave)

10.4 km PM2.5: 4.7 µg/m³

AMS ROX Station

11.7 km PM2.5: 4.5 µg/m³

8701 Germantown Ave

12.2 km PM2.5: 4.8 µg/m³

723 Wolcott Dr (2)

13.1 km PM2.5: 4.6 µg/m³

6237 Ridge Ave

14.1 km PM2.5: 4.4 µg/m³

629 E Allen Ln

14.6 km PM2.5: 4.8 µg/m³

6735 Germantown Ave

15.1 km PM2.5: 5.2 µg/m³

5029 Ridge ave

16.0 km PM2.5: 4.7 µg/m³

C029 (5400 Lincoln Hwy)

16.5 km PM2.5: 4.8 µg/m³

What cities are near Norristown?

23 King of Prussia 21 Radnor 23 Lansdale 20 East Mount Airy 28 Phoenixville 21 Havertown 20 West Oak Lane 20 Overbrook 20 Abington 20 Logan

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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 2026-10-20T20:57 UTC.