Air Quality in Norwalk, United States
Windy
32.2°C · 48.8% humidity
32.2°
Feels 36.0°
18
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Norwalk's air quality — share it
AQI Forecast
25
10am
25
24
18
1pm
20
21
22
4pm
22
23
24
7pm
24
25
25
10pm
25
25
25
1am
24
24
24
4am
24
24
24
7am
24
25
Air Quality Index Trend
45h · 5 stnNorwalk's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
48.8%
Humidity
43.7 km/h
Wind W
1014.9 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
4.3 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Norwalk?
Temperature & Precipitation
PM2.5 Trend
45h · 5 stationsPM2.54.3 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX14.9
Extreme
Station readings (1 station within 25 km)
4.3
Median
4.3
Average
4.3
Low
4.3
High
PM2.5 µg/m³ · Model: 5.9 · Bias: +1.6
What is the 7-day forecast for Norwalk?
09-05
32.2° 14.0°
2.06 mm
09-06
23.0° 17.4°
0.69 mm
09-07
20.4° 15.4°
0.19 mm
09-08
25.8° 16.4°
0.69 mm
09-09
25.2° 12.1°
0.25 mm
09-10
24.8° 13.4°
12.5 mm
09-11
30.4° 10.6°
Both models agree
Avg diff: 4.9°C
Where are air quality stations near Norwalk?
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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 2026-09-05T17:54 UTC.