🇺🇸 Weather in Herndon
Current Weather in Herndon
Severe Thunderstorm Watch issued May 20 at 12:39PM EDT until May 20 at 8:00PM EDT by NWS Baltimore MD/Washington DC
28°C
Feels like 30°C. Partly Cloudy.
Map Overlays:
Hourly Forecast for Herndon
16:00
24°
100%
17:00
22°
100%
18:00
22°
100%
19:00
21°
54%
20:00
21°
100%
21:00
20°
100%
22:00
20°
100%
23:00
19°
100%
00:00
19°
100%
01:00
18°
100%
02:00
17°
84%
03:00
16°
100%
04:00
16°
100%
05:00
14°
0%
06:00
14°
0%
07:00
13°
0%
08:00
13°
89%
09:00
12°
100%
10:00
12°
100%
11:00
12°
100%
12:00
11°
100%
13:00
11°
100%
14:00
10°
100%
15:00
10°
100%
14-Day Forecast for Herndon
Wed, May 20
Moderate rain
33° /
19°
Thu, May 21
Moderate rain
13° /
10°
Fri, May 22
Heavy rain
12° /
10°
Sat, May 23
Moderate rain
13° /
11°
Sun, May 24
Patchy rain nearby
13° /
12°
Mon, May 25
Patchy rain nearby
14° /
12°
Tue, May 26
Moderate rain
29° /
14°
Wed, May 27
Patchy rain nearby
31° /
19°
Thu, May 28
Heavy rain
28° /
19°
Fri, May 29
Moderate rain
15° /
13°
Sat, May 30
Patchy rain nearby
14° /
13°
Sun, May 31
Moderate rain
14° /
12°
Mon, Jun 01
Patchy rain nearby
22° /
12°
Tue, Jun 02
Sunny
21° /
13°
Additional Forecasts for Herndon
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 188.8 μg/m³
O₃ (Ozone) 73.0 μg/m³
NO₂ (Nitrogen Dioxide) 5.8 μg/m³
SO₂ (Sulphur Dioxide) 1.8 μg/m³
PM2.5 (Fine particles) 5.8 μg/m³
PM10 (Coarse particles) 6.2 μg/m³
