What is the air quality in Norwalk today?

The current Air Quality Index (AQI) in Norwalk is 19 (Good). PM2.5 concentration is 4.6 µg/m³.

What is the temperature in Norwalk right now?

The current temperature in Norwalk is 14.9°C (feels like 14.9°C). Humidity is 42.2% and wind speed is 35.0 km/h.

Is it safe to go outside in Norwalk?

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

Air Quality in Norwalk, United States

Clear

14.9°C · 42.2% humidity

14.9°

Feels 14.9°

Good

Air quality is satisfactory. Enjoy outdoor activities.

2 stations

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

45h · 13 stn

View full history →

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

42.2%

Humidity

35.0 km/h

Wind W

1021.8 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

4.6 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Norwalk?

Temperature & Precipitation

PM2.5 Trend

45h · 13 stations

PM2.54.6 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (2 stations within 25 km)

4.6

Median

4.6

Average

3.4

Low

5.8

High

PM2.5 µg/m³ · Model: 6.0 · Bias: +1.4

What is the 7-day forecast for Norwalk?

10-20

14.9° 5.2°

11.69 mm

10-21

20.7° 5.5°

10-22

17.8° 7.4°

7.5 mm

10-23

14.8° 5.3°

10-24

11.8° 8.3°

10-25

19.0° 9.2°

50.0 mm

10-26

11.4° 5.5°

Both models agree Avg diff: 3.5°C

Where are air quality stations near Norwalk?

Bridgeport, Connecticut, USA

18.8 km PM2.5: 3.1 µg/m³

Bridgeport, Connecticut, USA

18.8 km PM2.5: 3.4 µg/m³

What cities are near Norwalk?

19 East Norwalk 19 Westport 8 Darien 8 New Canaan 21 Wilton 8 North Stamford 9 Stamford 19 Bridgeport 19 Trumbull 19 Stratford

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ModerateAQI > 50 Unhealthy for Sensitive GroupsAQI > 100 UnhealthyAQI > 150 Very UnhealthyAQI > 200

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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 2026-10-20T20:05 UTC.