Hourly Weather | Today Thursday, May 21, 2026
New Haven, Connecticut
2 AM
Cloudy Weather
63°
Feels Like 61°
20
Humidity: 64%
UV Index: 0
Wind: 8 mph
3 AM
Cloudy Weather
63°
Feels Like 61°
20
Humidity: 60%
UV Index: 0
Wind: 8 mph
4 AM
Cloudy Weather
61°
Feels Like 59°
20
Humidity: 66%
UV Index: 0
Wind: 7 mph
5 AM
Cloudy Weather
61°
Feels Like 57°
20
Humidity: 68%
UV Index: 0
Wind: 7 mph
6 AM
Cloudy Weather
61°
Feels Like 57°
20
Humidity: 69%
UV Index: 0
Wind: 7 mph
7 AM
Cloudy Weather
59°
Feels Like 57°
25
Humidity: 70%
UV Index: 0
Wind: 8 mph
8 AM
Rainy Weather
61°
Feels Like 55°
60
Humidity: 67%
UV Index: 1
Wind: 8 mph
9 AM
Rainy Weather
61°
Feels Like 55°
60
Humidity: 66%
UV Index: 1
Wind: 8 mph
10 AM
Rainy Weather
59°
Feels Like 55°
60
Humidity: 66%
UV Index: 1
Wind: 8 mph
11 AM
Cloudy Weather
59°
Feels Like 59°
24
Humidity: 65%
UV Index: 2
Wind: 8 mph
12 PM
Cloudy Weather
61°
Feels Like 61°
19
Humidity: 62%
UV Index: 3
Wind: 8 mph
1 PM
Cloudy Weather
61°
Feels Like 64°
24
Humidity: 60%
UV Index: 3
Wind: 7 mph
2 PM
Rainy Weather
61°
Feels Like 63°
60
Humidity: 58%
UV Index: 3
Wind: 6 mph
3 PM
Cloudy Weather
63°
Feels Like 64°
49
Humidity: 58%
UV Index: 2
Wind: 6 mph
4 PM
Rainy Weather
61°
Feels Like 57°
60
Humidity: 62%
UV Index: 1
Wind: 7 mph
5 PM
Rainy Weather
61°
Feels Like 57°
52
Humidity: 64%
UV Index: 1
Wind: 6 mph
6 PM
Cloudy Weather
61°
Feels Like 61°
48
Humidity: 65%
UV Index: 1
Wind: 6 mph
7 PM
Cloudy Weather
59°
Feels Like 59°
29
Humidity: 68%
UV Index: 1
Wind: 6 mph
8 PM
Cloudy Weather
57°
Feels Like 57°
0
Humidity: 72%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
55°
Feels Like 55°
0
Humidity: 77%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
54°
Feels Like 55°
0
Humidity: 83%
UV Index: 0
Wind: 4 mph
11 PM
Cloudy Night
54°
Feels Like 54°
0
Humidity: 87%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

2 AM
22 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.69 µg/m³
  • PM10: 3.76 µg/m³
  • O3: 0.023 ppm
  • NO2: 8.5 ppb
  • SO2: 1 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

3 AM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.96 µg/m³
  • PM10: 3.14 µg/m³
  • O3: 0.026 ppm
  • NO2: 7.3 ppb
  • SO2: 1.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

4 AM
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.76 µg/m³
  • PM10: 3.13 µg/m³
  • O3: 0.029 ppm
  • NO2: 6.4 ppb
  • SO2: 1.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

5 AM
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.86 µg/m³
  • PM10: 3.33 µg/m³
  • O3: 0.031 ppm
  • NO2: 5.9 ppb
  • SO2: 1.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 AM
30 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.05 µg/m³
  • PM10: 3.37 µg/m³
  • O3: 0.032 ppm
  • NO2: 5.7 ppb
  • SO2: 1.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 AM
30 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.28 µg/m³
  • PM10: 3.41 µg/m³
  • O3: 0.032 ppm
  • NO2: 6.4 ppb
  • SO2: 1.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 AM
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.55 µg/m³
  • PM10: 3.69 µg/m³
  • O3: 0.031 ppm
  • NO2: 7.9 ppb
  • SO2: 1.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 AM
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.63 µg/m³
  • PM10: 3.62 µg/m³
  • O3: 0.030 ppm
  • NO2: 8.9 ppb
  • SO2: 1.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 AM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.65 µg/m³
  • PM10: 3.53 µg/m³
  • O3: 0.028 ppm
  • NO2: 8.9 ppb
  • SO2: 0.9 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 AM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.66 µg/m³
  • PM10: 3.52 µg/m³
  • O3: 0.028 ppm
  • NO2: 8.3 ppb
  • SO2: 0.9 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

12 PM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.67 µg/m³
  • PM10: 3.5 µg/m³
  • O3: 0.028 ppm
  • NO2: 7.3 ppb
  • SO2: 0.9 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

1 PM
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.78 µg/m³
  • PM10: 3.6 µg/m³
  • O3: 0.029 ppm
  • NO2: 6.5 ppb
  • SO2: 0.8 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

2 PM
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.98 µg/m³
  • PM10: 3.78 µg/m³
  • O3: 0.031 ppm
  • NO2: 5.5 ppb
  • SO2: 0.8 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

3 PM
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.32 µg/m³
  • PM10: 4.05 µg/m³
  • O3: 0.034 ppm
  • NO2: 4.5 ppb
  • SO2: 0.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

4 PM
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.59 µg/m³
  • PM10: 4.22 µg/m³
  • O3: 0.036 ppm
  • NO2: 3.8 ppb
  • SO2: 0.6 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

5 PM
35 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.55 µg/m³
  • PM10: 4.04 µg/m³
  • O3: 0.038 ppm
  • NO2: 3.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 PM
35 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.42 µg/m³
  • PM10: 3.87 µg/m³
  • O3: 0.038 ppm
  • NO2: 2.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 PM
36 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.39 µg/m³
  • PM10: 3.86 µg/m³
  • O3: 0.038 ppm
  • NO2: 2.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 PM
35 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.37 µg/m³
  • PM10: 3.86 µg/m³
  • O3: 0.038 ppm
  • NO2: 2.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM
35 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.29 µg/m³
  • PM10: 3.81 µg/m³
  • O3: 0.038 ppm
  • NO2: 2.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM
35 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.23 µg/m³
  • PM10: 3.78 µg/m³
  • O3: 0.037 ppm
  • NO2: 2.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.2 µg/m³
  • PM10: 3.81 µg/m³
  • O3: 0.037 ppm
  • NO2: 2.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.