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Westport (Connecticut) (US)

Air Quality Trend (last 7 days)

Good (0-50)
Moderate (51-100)
Unhealthy for Sensitive Groups (101-150)
Unhealthy (151-200)
Very Unhealthy (201-300)
Hazardous (300+)

Weather - 48h MET Norway

Cloudy
10°C
Cloudy
Humidity
55.1%
Wind
3 m/s
Pressure
1020.6 hPa
Direction
307°
Sunrise
04:00
Sunset
16:00
24h Forecast:
Temp.
-0° / 10°
Precip.
0mm
Max wind
8.3 m/s

Hourly Forecast

20.04
Now
Weather
10°
20.04
19:00
Weather
20.04
20:00
Weather
20.04
21:00
Weather
10°
20.04
22:00
Weather
20.04
23:00
Weather
21.04
00:00
Weather
8
21.04
01:00
Weather
8
21.04
02:00
Weather
7
21.04
03:00
Weather
7
21.04
04:00
Weather
7
21.04
05:00
Weather
7
21.04
06:00
Weather
7
21.04
07:00
Weather
6
21.04
08:00
Weather
7
21.04
09:00
Weather
6
21.04
10:00
Weather
-0°
6
21.04
11:00
Weather
-0°
6
21.04
12:00
Weather
5
21.04
13:00
Weather
21.04
14:00
Weather
21.04
15:00
Weather
21.04
16:00
Weather
21.04
17:00
Weather

Temperature

10°C
-0°C
18:00
10°C
19:00
9°C
20:00
9°C
21:00
10°C
22:00
9°C
23:00
8°C
00:00
6°C
01:00
5°C
02:00
4°C
03:00
4°C
04:00
3°C
05:00
2°C
06:00
2°C
07:00
1°C
08:00
1°C
09:00
0°C
10:00
-0°C
11:00
-0°C
12:00
2°C
13:00
4°C
14:00
5°C
15:00
6°C
16:00
6°C
17:00
6°C
18:00 05:00 17:00

Precipitation

0mm
0mm
18:00 05:00 17:00

Wind

8.3m/s
0m/s
18:00
3.4 m/s
19:00
4.4 m/s
20:00
4 m/s
21:00
4.4 m/s
22:00
4.3 m/s
23:00
4.8 m/s
00:00
8.3 m/s
01:00
8.2 m/s
02:00
6.9 m/s
03:00
6.7 m/s
04:00
6.9 m/s
05:00
7.1 m/s
06:00
6.6 m/s
07:00
6.3 m/s
08:00
6.5 m/s
09:00
6 m/s
10:00
5.8 m/s
11:00
5.5 m/s
12:00
5.1 m/s
13:00
4.5 m/s
14:00
4.2 m/s
15:00
3.9 m/s
16:00
3.2 m/s
17:00
2.9 m/s
18:00 05:00 17:00

Radiation

No sensor within 100 km.

We display the worst measurements from all stations in the area. This approach provides a more cautious assessment of air quality, accounting for local pollution sources.

AQI
69 km
59
19.7%

Measurement time: 2026-04-20 19:00

Calculated from PM2.5/PM10

O3
35.4 km
34.4 µg/m3
21.5%

Measurement time: 2026-04-20 18:00

source: Aqicn

PM2.5
69 km
16 µg/m3
19%

Measurement time: 2026-04-20 19:00

source: Aqicn

NO2
35.4 km
8.8 µg/m3
4.4%

Measurement time: 2026-04-20 18:00

source: Aqicn

CO
72.3 km
0.0034 mg/m3
0%

Measurement time: 2026-04-20 19:00

source: Aqicn

Info


Latitude: 41.14149
Longitude: -73.3579


Solar Energy

Low
278.4 W/m²
Solar Radiation
Solar Calculator
Calculate energy production for Westport

About Air Quality in Westport

Air quality in Westport is monitored in real-time by sensors and measurement stations. On this page you'll find current data on major air pollutants including particulate matter PM2.5 and PM10, nitrogen dioxide (NO2), ozone (O3), and radiation levels.

Common Pollutants in Westport

  • PM2.5 - fine particulate matter up to 2.5 micrometers, particularly harmful to health
  • PM10 - particulate matter up to 10 micrometers from traffic and industry
  • NO2 - nitrogen dioxide mainly emitted by vehicles
  • O3 - tropospheric ozone formed in photochemical reactions

When is Air Quality Best in Westport?

Generally, the best air quality occurs:

  • Early morning (5:00-7:00 AM) before rush hour traffic
  • After rainfall which cleanses the atmosphere
  • During strong winds that disperse pollutants
  • In summer months when heating systems are less used

Tips for Runners in Westport

If you're planning outdoor activities in Westport, always check the current AQI value. When AQI exceeds 100, consider moving your workout indoors or shortening the distance. People with respiratory issues, children, and seniors should be especially cautious during elevated pollution levels. Choose routes away from busy streets and industrial areas.