Hourly Weather | Today Tuesday, June 30, 2026
Active Weather Warnings
Hartford, Connecticut
8 PM
Stormy Weather
77°
Feels Like 75°
51
Humidity: 77%
UV Index: 0
Wind: 9 mph
9 PM
Cloudy Night
75°
Feels Like 75°
47
Humidity: 74%
UV Index: 0
Wind: 9 mph
10 PM
Cloudy Night
73°
Feels Like 72°
40
Humidity: 73%
UV Index: 0
Wind: 9 mph
11 PM
Cloudy Night
72°
Feels Like 70°
33
Humidity: 70%
UV Index: 0
Wind: 9 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 4.84 µg/m³
  • PM10: 7.83 µg/m³
  • O3: 0.045 ppm
  • NO2: 2.8 ppb
  • SO2: 0.6 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.25 µg/m³
  • PM10: 7.16 µg/m³
  • O3: 0.042 ppm
  • NO2: 2.7 ppb
  • SO2: 0.6 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.88 µg/m³
  • PM10: 6.85 µg/m³
  • O3: 0.040 ppm
  • NO2: 2.7 ppb
  • SO2: 0.6 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.65 µg/m³
  • PM10: 6.79 µg/m³
  • O3: 0.039 ppm
  • NO2: 2.8 ppb
  • SO2: 0.7 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

Weather Alerts and Warnings for Hartford

Air Quality Alert

Air Quality Alert issued June 30 at 3:00PM EDT by NWS Boston/Norton MA
Jun 30, 3:00 PM Jun 30, 11:00 PM
The Connecticut Department of Environmental Protection has issued an
Air Quality Alert Day for Ground Level Ozone, until 11 PM EDT this
evening.

An Air Quality Alert day means that Ground Level Ozone
concentrations within the region may approach or exceed unhealthy
standards. For additional information, please visit the Connecticut
Department of Energy and Environmental Protection website at:

https://portal.ct.gov/deep
Updated: Jun 30, 6:55 PM Source: NWS Alert