Hourly Weather | Today Thursday, July 2, 2026
Active Weather Warnings
Rochester, New Hampshire
11 PM
Cloudy Night
82°
Feels Like 86°
34
Humidity: 72%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

11 PM
41 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.8 µg/m³
  • PM10: 11.61 µg/m³
  • O3: 0.039 ppm
  • NO2: 4 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

Weather Alerts and Warnings for Rochester

Severe Future Likely

Extreme Heat Watch

Extreme Heat Watch issued June 30 at 6:35AM EDT until July 3 at 8:00PM EDT by NWS Gray ME
Jul 1, 12:00 PM Jul 3, 8:00 PM
WHAT: Dangerously hot conditions with heat index values up to 110
possible.

WHERE: Portions of south central, southwest, and western Maine
and central, northern, and southern New Hampshire.

WHEN: From Wednesday afternoon through Friday evening.

IMPACTS: Heat related illnesses increase significantly during
extreme heat and high humidity events.

ADDITIONAL DETAILS: Overnight low temperatures will only fall
into the 70s, resulting in accumulated heat stress.
+ Read More
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
Updated: Jun 30, 1:24 PM Source: NWS Alert
Severe Expected Likely

Extreme Heat Warning

Extreme Heat Warning issued July 2 at 1:20PM EDT until July 3 at 8:00PM EDT by NWS Gray ME
Jul 2, 1:20 PM Jul 3, 8:00 PM
WHAT: Dangerously hot conditions with heat index values up to 110.

WHERE: Portions of southwest and western Maine and central,
northern, and southern New Hampshire.

WHEN: Until 8 PM EDT Friday.

IMPACTS: Heat related illnesses increase significantly during
extreme heat and high humidity events.

ADDITIONAL DETAILS: Overnight low temperatures will only fall
into the 70s, resulting in accumulated heat stress.
+ Read More
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Updated: Jul 2, 7:04 PM Source: NWS Alert