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Cos Cob (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

Pogodnie
18°C
Pogodnie
Humidity
54.1%
Wind
4 m/s
Pressure
1023.6 hPa
Direction
114°
Sunrise
04:00
Sunset
16:00
24h Forecast:
Temp.
6° / 19°
Precip.
3.7mm
Max wind
6.7 m/s

Hourly Forecast

04.04
Now
Weather
18°
04.04
18:00
Weather
17°
5
04.04
19:00
Weather
17°
04.04
20:00
Weather
17°
6
04.04
21:00
Weather
15°
6
04.04
22:00
Weather
13°
5
04.04
23:00
Weather
10°
5
05.04
00:00
Weather
5
05.04
01:00
Weather
6
05.04
02:00
Weather
6
05.04
03:00
Weather
6
05.04
04:00
Weather
6
05.04
05:00
Weather
0.1
6
05.04
06:00
Weather
05.04
07:00
Weather
05.04
08:00
Weather
05.04
09:00
Weather
05.04
10:00
Weather
1.3
05.04
11:00
Weather
10°
05.04
12:00
Weather
11°
05.04
13:00
Weather
14°
05.04
14:00
Weather
17°
6
05.04
15:00
Weather
18°
0.4
7
05.04
16:00
Weather
19°
1.9
6

Temperature

19°C
6°C
17:00
18°C
18:00
17°C
19:00
17°C
20:00
17°C
21:00
15°C
22:00
13°C
23:00
10°C
00:00
9°C
01:00
7°C
02:00
6°C
03:00
6°C
04:00
6°C
05:00
6°C
06:00
6°C
07:00
6°C
08:00
7°C
09:00
7°C
10:00
8°C
11:00
10°C
12:00
11°C
13:00
14°C
14:00
17°C
15:00
18°C
16:00
19°C
17:00 04:00 16:00

Precipitation

1.9mm
0mm
05:00
0.1mm
10:00
1.3mm
15:00
0.4mm
16:00
1.9mm
17:00 04:00 16:00

Wind

6.7m/s
0m/s
17:00
4.3 m/s
18:00
5.2 m/s
19:00
4.7 m/s
20:00
5.6 m/s
21:00
5.7 m/s
22:00
5.2 m/s
23:00
5.3 m/s
00:00
5.4 m/s
01:00
5.6 m/s
02:00
6 m/s
03:00
6 m/s
04:00
5.7 m/s
05:00
5.8 m/s
06:00
5 m/s
07:00
4.5 m/s
08:00
4 m/s
09:00
3.6 m/s
10:00
3.9 m/s
11:00
4 m/s
12:00
4.8 m/s
13:00
4.6 m/s
14:00
6.3 m/s
15:00
6.7 m/s
16:00
5.8 m/s
17:00 04:00 16:00

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
50.5 km
129
43%

Measurement time: 2026-04-04 17:00

Calculated from PM2.5/PM10

PM2.5
50.5 km
47 µg/m3
56%

Measurement time: 2026-04-04 17:00

source: Aqicn

O3
15.7 km
31.2 µg/m3
19.5%

Measurement time: 2026-04-04 17:00

source: Aqicn

NO2
15.7 km
11.4 µg/m3
5.7%

Measurement time: 2026-04-04 17:00

source: Aqicn

CO
50.5 km
0.0034 mg/m3
0%

Measurement time: 2026-04-04 17:00

source: Aqicn

Info


Latitude: 41.03343
Longitude: -73.59957


Solar Energy

Moderate
536.7 W/m²
Solar Radiation
Solar Calculator
Calculate energy production for Cos Cob

About Air Quality in Cos Cob

Air quality in Cos Cob 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 Cos Cob

  • 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 Cos Cob?

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 Cos Cob

If you're planning outdoor activities in Cos Cob, 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.