Hourly Weather | Today Tuesday, July 21, 2026
Active Weather Warnings
Clifton, New Jersey
4 AM
Cloudy Night
72°
Feels Like 70°
6
Humidity: 80%
UV Index: 0
Wind: 6 mph
5 AM
Cloudy Weather
72°
Feels Like 70°
7
Humidity: 83%
UV Index: 0
Wind: 6 mph
6 AM
Cloudy Weather
72°
Feels Like 70°
7
Humidity: 84%
UV Index: 0
Wind: 6 mph
7 AM
Cloudy Weather
72°
Feels Like 73°
11
Humidity: 83%
UV Index: 0
Wind: 7 mph
8 AM
Cloudy Weather
73°
Feels Like 75°
28
Humidity: 81%
UV Index: 1
Wind: 8 mph
9 AM
Cloudy Weather
75°
Feels Like 77°
28
Humidity: 80%
UV Index: 1
Wind: 8 mph
10 AM
Cloudy Weather
75°
Feels Like 79°
34
Humidity: 80%
UV Index: 1
Wind: 9 mph
11 AM
Cloudy Weather
75°
Feels Like 79°
49
Humidity: 80%
UV Index: 2
Wind: 10 mph
12 PM
Stormy Weather
77°
Feels Like 77°
74
Humidity: 79%
UV Index: 2
Wind: 10 mph
1 PM
Stormy Weather
79°
Feels Like 79°
74
Humidity: 79%
UV Index: 2
Wind: 10 mph
2 PM
Cloudy Weather
79°
Feels Like 84°
49
Humidity: 80%
UV Index: 2
Wind: 9 mph
3 PM
Cloudy Weather
79°
Feels Like 84°
49
Humidity: 81%
UV Index: 2
Wind: 9 mph
4 PM
Stormy Weather
81°
Feels Like 81°
63
Humidity: 79%
UV Index: 1
Wind: 9 mph
5 PM
Cloudy Weather
79°
Feels Like 84°
49
Humidity: 83%
UV Index: 1
Wind: 9 mph
6 PM
Cloudy Weather
79°
Feels Like 82°
49
Humidity: 85%
UV Index: 1
Wind: 8 mph
7 PM
Stormy Weather
77°
Feels Like 79°
60
Humidity: 87%
UV Index: 0
Wind: 8 mph
8 PM
Stormy Weather
75°
Feels Like 77°
63
Humidity: 87%
UV Index: 0
Wind: 8 mph
9 PM
Stormy Weather
75°
Feels Like 79°
55
Humidity: 88%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Weather
75°
Feels Like 79°
49
Humidity: 89%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Weather
75°
Feels Like 79°
34
Humidity: 90%
UV Index: 0
Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

4 AM
55 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 11.36 µg/m³
  • PM10: 15.79 µg/m³
  • O3: 0.056 ppm
  • NO2: 1.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.29 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.89 µg/m³
  • PM10: 15.37 µg/m³
  • O3: 0.054 ppm
  • NO2: 1.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.30 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.15 µg/m³
  • PM10: 14.4 µg/m³
  • O3: 0.052 ppm
  • NO2: 1.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.31 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.24 µg/m³
  • PM10: 13.1 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.32 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.32 µg/m³
  • PM10: 11.78 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.33 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.27 µg/m³
  • PM10: 9.76 µg/m³
  • O3: 0.049 ppm
  • NO2: 2.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.32 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.45 µg/m³
  • PM10: 7.97 µg/m³
  • O3: 0.046 ppm
  • NO2: 2.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.30 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.79 µg/m³
  • PM10: 6.78 µg/m³
  • O3: 0.043 ppm
  • NO2: 2.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.27 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.17 µg/m³
  • PM10: 5.79 µg/m³
  • O3: 0.040 ppm
  • NO2: 2.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.7 µg/m³
  • PM10: 5.12 µg/m³
  • O3: 0.036 ppm
  • NO2: 2.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.20 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: 4.46 µg/m³
  • PM10: 4.82 µg/m³
  • O3: 0.031 ppm
  • NO2: 2.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.34 µg/m³
  • PM10: 4.72 µg/m³
  • O3: 0.028 ppm
  • NO2: 2.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.29 µg/m³
  • PM10: 4.72 µg/m³
  • O3: 0.026 ppm
  • NO2: 3.2 ppb
  • SO2: 0.5 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.31 µg/m³
  • PM10: 4.79 µg/m³
  • O3: 0.026 ppm
  • NO2: 3.5 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
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.48 µg/m³
  • PM10: 5.01 µg/m³
  • O3: 0.026 ppm
  • NO2: 4.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.62 µg/m³
  • PM10: 5.15 µg/m³
  • O3: 0.025 ppm
  • NO2: 4.7 ppb
  • SO2: 0.6 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.59 µg/m³
  • PM10: 5.01 µg/m³
  • O3: 0.024 ppm
  • NO2: 4.8 ppb
  • SO2: 0.6 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.43 µg/m³
  • PM10: 4.71 µg/m³
  • O3: 0.023 ppm
  • NO2: 4.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.35 µg/m³
  • PM10: 4.56 µg/m³
  • O3: 0.023 ppm
  • NO2: 4 ppb
  • SO2: 0.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.29 µg/m³
  • PM10: 4.46 µg/m³
  • O3: 0.023 ppm
  • NO2: 3.6 ppb
  • SO2: 0.5 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 Clifton

Severe Future Possible

Flood Watch

Flood Watch issued July 20 at 2:31PM EDT until July 22 at 2:00AM EDT by NWS Upton NY
Jul 21, 8:00 AM Jul 22, 2:00 AM
WHAT: Flooding caused by excessive rainfall is possible.

WHERE: Portions of northeast New Jersey, including the following
areas, Eastern Bergen, Eastern Essex, Eastern Passaic, Eastern
Union, Hudson, Western Bergen, Western Essex, Western Passaic and
Western Union and southeast New York, including the following
areas, Bronx, Kings (Brooklyn), New York (Manhattan), Northern
Queens, Richmond (Staten Island) and Southern Queens.

WHEN: From Tuesday morning through late Tuesday night.

IMPACTS: Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Flooding may occur in poor drainage and urban areas.

ADDITIONAL DETAILS:
- Multiple rounds of showers and thunderstorms are expected
Tuesday morning through Tuesday evening. Average rainfall
totals will be between 1 and 2 inches, with isolated totals
around 3 to 4 inches possible. Peak rainfall rates in the
strongest storms could be near 2.5 inches per hour.
- http://www.weather.gov/safety/flood
+ Read More
You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
Updated: Jul 21, 2:28 AM Source: NWS Alert