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Stamford (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

Snow
0°C
Snow
Humidity
89%
Wind
10 m/s
Pressure
1014.6 hPa
Direction
79°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
-2° / -0°
Precip.
24.6mm
Max wind
12.3 m/s

Hourly Forecast

22.02
Now
Weather
0.7
10
22.02
22:00
Weather
-0°
0.7
10
22.02
23:00
Weather
-0°
1.2
9
23.02
00:00
Weather
-0°
1.6
10
23.02
01:00
Weather
-1°
1.3
10
23.02
02:00
Weather
-1°
1.1
11
23.02
03:00
Weather
-1°
0.7
12
23.02
04:00
Weather
-1°
0.5
12
23.02
05:00
Weather
-1°
1.2
11
23.02
06:00
Weather
-1°
1.5
12
23.02
07:00
Weather
-1°
1.2
11
23.02
08:00
Weather
-2°
1.3
12
23.02
09:00
Weather
-2°
1.6
12
23.02
10:00
Weather
-2°
1.8
12
23.02
11:00
Weather
-2°
2.1
12
23.02
12:00
Weather
-2°
1.1
12
23.02
13:00
Weather
-2°
0.9
12
23.02
14:00
Weather
-2°
0.9
10
23.02
15:00
Weather
-2°
0.8
10
23.02
16:00
Weather
-2°
0.7
10
23.02
17:00
Weather
-2°
0.6
11
23.02
18:00
Weather
-2°
0.6
11
23.02
19:00
Weather
-2°
0.4
10
23.02
20:00
Weather
-1°
0.1
9

Temperature

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

Precipitation

2.1mm
0mm
21:00
0.7mm
22:00
0.7mm
23:00
1.2mm
00:00
1.6mm
01:00
1.3mm
02:00
1.1mm
03:00
0.7mm
04:00
0.5mm
05:00
1.2mm
06:00
1.5mm
07:00
1.2mm
08:00
1.3mm
09:00
1.6mm
10:00
1.8mm
11:00
2.1mm
12:00
1.1mm
13:00
0.9mm
14:00
0.9mm
15:00
0.8mm
16:00
0.7mm
17:00
0.6mm
18:00
0.6mm
19:00
0.4mm
20:00
0.1mm
21:00 08:00 20:00

Wind

12.3m/s
0m/s
21:00
9.7 m/s
22:00
9.7 m/s
23:00
9.3 m/s
00:00
9.7 m/s
01:00
10.1 m/s
02:00
11.1 m/s
03:00
11.5 m/s
04:00
11.7 m/s
05:00
11.1 m/s
06:00
11.5 m/s
07:00
11.4 m/s
08:00
11.8 m/s
09:00
11.8 m/s
10:00
11.8 m/s
11:00
12.2 m/s
12:00
12.3 m/s
13:00
11.9 m/s
14:00
9.9 m/s
15:00
9.8 m/s
16:00
10 m/s
17:00
10.9 m/s
18:00
10.7 m/s
19:00
9.5 m/s
20:00
9 m/s
21:00 08:00 20:00

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
54.4 km
86
28.7%

Measurement time: 2026-02-22 21:00

Calculated from PM2.5/PM10

PM2.5
54.4 km
29 µg/m3
34.5%

Measurement time: 2026-02-22 21:00

source: Aqicn

O3
18.9 km
31.2 µg/m3
19.5%

Measurement time: 2026-02-22 21:00

source: Aqicn

NO2
18.9 km
11.4 µg/m3
5.7%

Measurement time: 2026-02-22 21:00

source: Aqicn

CO
18.9 km
0.0034 mg/m3
0%

Measurement time: 2026-02-22 21:00

source: Aqicn

Info


Latitude: 41.05343
Longitude: -73.53873


Solar Energy

Night
0 W/m²
Solar Radiation
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About Air Quality in Stamford

Air quality in Stamford 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 Stamford

  • 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 Stamford?

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 Stamford

If you're planning outdoor activities in Stamford, 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.