Hourly Weather | Today Thursday, July 23, 2026
Active Weather Warnings
Chapel Hill, North Carolina
8 AM
Stormy Weather
75°
Feels Like 79°
66
Humidity: 92%
UV Index: 0
Wind: 6 mph
9 AM
Cloudy Weather
75°
Feels Like 82°
49
Humidity: 90%
UV Index: 1
Wind: 7 mph
10 AM
Cloudy Weather
75°
Feels Like 81°
49
Humidity: 90%
UV Index: 1
Wind: 8 mph
11 AM
Stormy Weather
73°
Feels Like 73°
72
Humidity: 89%
UV Index: 1
Wind: 8 mph
12 PM
Cloudy Weather
73°
Feels Like 81°
49
Humidity: 87%
UV Index: 3
Wind: 8 mph
1 PM
Stormy Weather
73°
Feels Like 73°
72
Humidity: 84%
UV Index: 2
Wind: 8 mph
2 PM
Stormy Weather
73°
Feels Like 73°
74
Humidity: 82%
UV Index: 2
Wind: 7 mph
3 PM
Stormy Weather
75°
Feels Like 73°
69
Humidity: 82%
UV Index: 2
Wind: 7 mph
4 PM
Cloudy Weather
75°
Feels Like 79°
49
Humidity: 82%
UV Index: 1
Wind: 7 mph
5 PM
Cloudy Weather
75°
Feels Like 79°
34
Humidity: 82%
UV Index: 1
Wind: 7 mph
6 PM
Cloudy Weather
73°
Feels Like 75°
34
Humidity: 83%
UV Index: 1
Wind: 7 mph
7 PM
Cloudy Weather
73°
Feels Like 75°
39
Humidity: 83%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Weather
72°
Feels Like 73°
49
Humidity: 85%
UV Index: 0
Wind: 6 mph
9 PM
Stormy Weather
72°
Feels Like 68°
71
Humidity: 85%
UV Index: 0
Wind: 6 mph
10 PM
Stormy Weather
72°
Feels Like 66°
71
Humidity: 88%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
72°
Feels Like 72°
40
Humidity: 88%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

8 AM
17 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.14 µg/m³
  • PM10: 7.37 µg/m³
  • O3: 0.014 ppm
  • NO2: 2.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

9 AM
17 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.11 µg/m³
  • PM10: 7.02 µg/m³
  • O3: 0.011 ppm
  • NO2: 2.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

10 AM
17 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.05 µg/m³
  • PM10: 6.56 µg/m³
  • O3: 0.010 ppm
  • NO2: 2.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

11 AM
16 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 3.92 µg/m³
  • PM10: 5.93 µg/m³
  • O3: 0.011 ppm
  • NO2: 2 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

12 PM
15 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 3.67 µg/m³
  • PM10: 5.19 µg/m³
  • O3: 0.014 ppm
  • NO2: 1.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.29 µg/m³
  • PM10: 4.42 µg/m³
  • O3: 0.017 ppm
  • NO2: 1.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.87 µg/m³
  • PM10: 3.66 µg/m³
  • O3: 0.020 ppm
  • NO2: 1.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.77 µg/m³
  • PM10: 2.08 µg/m³
  • O3: 0.025 ppm
  • NO2: 0.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.33 µg/m³
  • PM10: 1.59 µg/m³
  • O3: 0.025 ppm
  • NO2: 0.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.32 µg/m³
  • PM10: 1.62 µg/m³
  • O3: 0.025 ppm
  • NO2: 0.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.48 µg/m³
  • PM10: 1.93 µg/m³
  • O3: 0.022 ppm
  • NO2: 1.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.7 µg/m³
  • PM10: 2.27 µg/m³
  • O3: 0.017 ppm
  • NO2: 1.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.91 µg/m³
  • PM10: 2.53 µg/m³
  • O3: 0.013 ppm
  • NO2: 1.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.21 µg/m³
  • PM10: 2.8 µg/m³
  • O3: 0.011 ppm
  • NO2: 1.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.56 µg/m³
  • PM10: 3.15 µg/m³
  • O3: 0.009 ppm
  • NO2: 1.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.85 µg/m³
  • PM10: 3.43 µg/m³
  • O3: 0.008 ppm
  • NO2: 1.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

Weather Alerts and Warnings for Chapel Hill

Severe Immediate Likely

Flash Flood Warning

Flash Flood Warning issued July 23 at 6:53AM EDT until July 23 at 11:00AM EDT by NWS Raleigh NC
Jul 23, 6:53 AM Jul 23, 11:00 AM
FFWRAH

The National Weather Service in Raleigh has issued a

* Flash Flood Warning for...
Alamance County in central North Carolina...
Northern Chatham County in central North Carolina...
Durham County in central North Carolina...
Southern Granville County in central North Carolina...
Orange County in central North Carolina...

* Until 1100 AM EDT.

* At 653 AM EDT, Doppler radar and automated rain gauges indicate
showers and thunderstorms producing heavy rain will continue to
move across the warned area. Between 1 and 2 inches of rain has
already fallen over much of the area with an additional 1 to 3
inches of rain likely to produce flash flooding.

HAZARD...Flash flooding caused by showers and thunderstorms.

SOURCE...Radar and automated gauges.

IMPACT...Flash flooding of small creeks and streams, urban areas,
as well as other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
Durham, Chapel Hill, Burlington, Hillsborough, Creedmoor,
Pittsboro, Siler City, Carrboro, Mebane, Haw River, Swepsonville,
Alamance, and Stem.

This includes the following frequently flooded locations...
Hwy 15-501 Business & Durham-Chapel Hill Blvd, Hillandale Rd at
Ellerbe Creek, Cole Mill Rd at I-85, W Club Blvd between Hillandale
Rd and Guess Rd, S. Roxboro St at the Durham Freeway, Estes Dr,
Camelot Dr and Cleland Dr along Bolin Creek, South Estes Extension,
Booker Creek Rd near Book Creek and Foxwood Dr, Eastgate Shopping
Center and Franklin St near Dobbins Dr.
+ Read More
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads.
Updated: Jul 23, 6:54 AM Source: NWS Alert
Severe Future Possible

Flood Watch

Flood Watch issued July 22 at 9:41PM EDT until July 24 at 12:00AM EDT by NWS Raleigh NC
Jul 22, 9:41 PM Jul 24, 12:00 AM
WHAT: Flash flooding caused by repetitive periods of excessive
rainfall remains possible.

WHERE: The northern Piedmont and northern Coastal Plain of North
Carolina, including the following counties, Alamance, Durham,
Forsyth, Granville, Guilford, Halifax, Orange, Person, Vance and
Warren.

WHEN: Through Thursday evening.

IMPACTS: Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.

ADDITIONAL DETAILS:
- Waves of showers and thunderstorms with heavy rain will focus
along a slow-moving cold front and produce 2 to 4 inches of
rain, with locally higher amounts, overnight through Thursday
evening.
- http://www.weather.gov/safety/flood
+ Read More
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Updated: Jul 23, 6:54 AM Source: NWS Alert
Minor Expected Likely

Flood Advisory

Flood Advisory issued July 23 at 5:15AM EDT until July 23 at 10:00AM EDT by NWS Raleigh NC
Jul 23, 5:15 AM Jul 23, 10:00 AM
WHAT: Flooding caused by excessive and repetitive rainfall is
expected.

WHERE: A portion of central North Carolina, including the
following counties, Chatham, Durham, Granville, Orange, Person,
Vance and Wake.

WHEN: Until 1000 AM EDT.

IMPACTS: Minor flooding in low-lying and poor drainage areas,
urban areas, and near small creeks and streams.

ADDITIONAL DETAILS:
- At 508 AM EDT, Doppler radar and automated rain gauges
indicate that between 1 and 3 inches of rain has fallen
across parts of the area. While the rain has fallen over a
long period of time, additional heavy rain could result in
minor flooding in the advisory area.
- Additional rainfall amounts of 1 to 3 inches are expected
over the area. This additional rain will result in minor
flooding.
- Some locations that will experience flooding include...
Raleigh, Durham, Cary, Chapel Hill, Henderson, Oxford,
Hillsborough, Creedmoor, Carrboro, Butner, Morrisville, Stem,
Middleburg, and Bahama.
- http://www.weather.gov/safety/flood
+ Read More
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Updated: Jul 23, 6:54 AM Source: NWS Alert