Hourly Weather | Today Tuesday, July 21, 2026
Meriden, Connecticut
5 AM
Cloudy Night
63°
Feels Like 63°
0
Humidity: 100%
UV Index: 0
Wind: 5 mph
6 AM
Cloudy Weather
63°
Feels Like 64°
0
Humidity: 100%
UV Index: 0
Wind: 6 mph
7 AM
Cloudy Weather
64°
Feels Like 66°
0
Humidity: 100%
UV Index: 1
Wind: 6 mph
8 AM
Cloudy Weather
68°
Feels Like 72°
19
Humidity: 94%
UV Index: 2
Wind: 7 mph
9 AM
Cloudy Weather
72°
Feels Like 73°
19
Humidity: 87%
UV Index: 2
Wind: 8 mph
10 AM
Cloudy Weather
73°
Feels Like 75°
24
Humidity: 81%
UV Index: 2
Wind: 9 mph
11 AM
Cloudy Weather
75°
Feels Like 79°
43
Humidity: 76%
UV Index: 2
Wind: 10 mph
12 PM
Cloudy Weather
75°
Feels Like 81°
47
Humidity: 76%
UV Index: 3
Wind: 10 mph
1 PM
Rainy Weather
77°
Feels Like 79°
51
Humidity: 75%
UV Index: 2
Wind: 10 mph
2 PM
Stormy Weather
75°
Feels Like 75°
66
Humidity: 80%
UV Index: 2
Wind: 9 mph
3 PM
Cloudy Weather
75°
Feels Like 81°
49
Humidity: 82%
UV Index: 2
Wind: 9 mph
4 PM
Cloudy Weather
75°
Feels Like 81°
49
Humidity: 86%
UV Index: 1
Wind: 8 mph
5 PM
Cloudy Weather
75°
Feels Like 81°
49
Humidity: 89%
UV Index: 1
Wind: 8 mph
6 PM
Stormy Weather
75°
Feels Like 73°
61
Humidity: 90%
UV Index: 0
Wind: 7 mph
7 PM
Cloudy Weather
73°
Feels Like 79°
49
Humidity: 93%
UV Index: 0
Wind: 7 mph
8 PM
Stormy Weather
73°
Feels Like 73°
55
Humidity: 95%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Weather
73°
Feels Like 79°
49
Humidity: 96%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Weather
73°
Feels Like 79°
47
Humidity: 97%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Weather
73°
Feels Like 79°
49
Humidity: 97%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

5 AM
74 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.89 µg/m³
  • PM10: 13.4 µg/m³
  • O3: 0.062 ppm
  • NO2: 1.5 ppb
  • SO2: 0.6 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 AM
71 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.51 µg/m³
  • PM10: 12.87 µg/m³
  • O3: 0.061 ppm
  • NO2: 1.7 ppb
  • SO2: 0.6 ppb
  • CO: 0.19 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 AM
67 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.06 µg/m³
  • PM10: 12.35 µg/m³
  • O3: 0.059 ppm
  • NO2: 2 ppb
  • SO2: 0.6 ppb
  • CO: 0.20 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

8 AM
62 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.5 µg/m³
  • PM10: 11.94 µg/m³
  • O3: 0.058 ppm
  • NO2: 2.2 ppb
  • SO2: 0.6 ppb
  • CO: 0.22 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

9 AM
60 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.79 µg/m³
  • PM10: 11.25 µg/m³
  • O3: 0.057 ppm
  • NO2: 2 ppb
  • SO2: 0.5 ppb
  • CO: 0.24 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

10 AM
57 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.09 µg/m³
  • PM10: 10.65 µg/m³
  • O3: 0.056 ppm
  • NO2: 1.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.26 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

11 AM
53 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.47 µg/m³
  • PM10: 10.22 µg/m³
  • O3: 0.055 ppm
  • NO2: 1.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.27 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

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

Pollutant Concentrations:

  • PM2.5: 5.08 µg/m³
  • PM10: 8.89 µg/m³
  • O3: 0.054 ppm
  • NO2: 1.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.28 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.03 µg/m³
  • PM10: 7.88 µg/m³
  • O3: 0.051 ppm
  • NO2: 1.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.27 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.26 µg/m³
  • PM10: 7.67 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.51 µg/m³
  • PM10: 7.58 µg/m³
  • O3: 0.045 ppm
  • NO2: 1.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.48 µg/m³
  • PM10: 7.18 µg/m³
  • O3: 0.040 ppm
  • NO2: 2 ppb
  • SO2: 0.4 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.32 µg/m³
  • PM10: 6.91 µg/m³
  • O3: 0.035 ppm
  • NO2: 2.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.09 µg/m³
  • PM10: 6.67 µg/m³
  • O3: 0.031 ppm
  • NO2: 2.9 ppb
  • SO2: 0.5 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.84 µg/m³
  • PM10: 6.17 µg/m³
  • O3: 0.029 ppm
  • NO2: 3.2 ppb
  • SO2: 0.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.7 µg/m³
  • PM10: 5.74 µg/m³
  • O3: 0.028 ppm
  • NO2: 3.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.6 µg/m³
  • PM10: 5.39 µg/m³
  • O3: 0.028 ppm
  • NO2: 3.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.5 µg/m³
  • PM10: 5.16 µg/m³
  • O3: 0.028 ppm
  • NO2: 3.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.3 µg/m³
  • PM10: 4.82 µg/m³
  • O3: 0.028 ppm
  • NO2: 3.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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