Chelmsford
20°
SunnyFeels like 20°Today 7° – 21°
Mon 13:00· nowor click any hour below
Clouds thicken this afternoon, dry. Clear and cool tonight, 7°. Tomorrow partly sunny and 8° cooler, up to 12°.
Right now
model value for 13:00, not a measurementWind3 m/s W
Gusts6 m/s
Humidity31 %
Pressure1019 hPa ↘
Cloud cover5 %
Visibility24 km
UV index (CAMS)2 · Moderate
Air (US AQI, CAMS)52 · Moderate
Sun 34° above the horizon · sunrise 07:11 · sunset 17:46
UmbrellaNoDry for the next 24 hours
Kite window13:00 – 17:00Wind 3–4 m/s, gusts under 8 (good, not excellent)
Longest dry spell89 h from nowDry tonight and all of Tuesday, until Fri 06:00
TonightLow 7° at 06:00Clear, light wind; no frost
Next 24 hours
Click any hour: the sky, the panel, the sun chart and the planner follow itMon 13:00 · Sunny20°, feels like 20°
Wind 3 m/s from W, gusts 6 · dryClouds 5 % · humidity 31 %
Kite flying: GoodLight wind, 3 m/sSun height
Mon 26 Oct · computed from the coordinatesUV 2 Moderate at 13:00 · CAMS modelMon 26 Oct21 June, longest day21 December, shortest daythe disc shows the chosen hour
Sunrise07:11
Sunset17:46
Daylight10 h 35 min2 min shorter than Sunday
Highest34.8°at 12:30
Civil dawn · dusk06:42 · 18:15
Moon
from the coordinates100 %Waning gibbouslit now, Mon 13:02Moonrise 17:41Moonset 07:48
Next phases
Last quarterSun 1 Novin 6 days
New moonMon 9 Novin 14 days
First quarterTue 17 Novin 22 days
Full moonTue 24 Novin 29 days
Outdoor planner
The next 24 hours rated for six activities by fixed rules from this forecast, not by AIHow we rate ›
Planner rules, per hour. Avoid: thunder; gusts from 17 m/s (kite 15, picnic 14); rain from 1.0 mm (kite, laundry, picnic, car wash: any rain; laundry also rain within 3 h). Poor: storms due within 2 h (kite 3 h); dark (sun below −6°) or after sunset; light rain; strong gusts; humid air (laundry 85 % and up); chilly (picnic under 12°); rain within 12 h (car wash). Excellent: running 8°–18° with wind under 7 and Good air; cycling 10°–24° with wind under 6; kite wind 4–8 with gusts under 11; laundry humidity under 70 % with a breeze; picnic 16° and up with wind under 6. Anything else: Good.
ExcellentGoodPoorAvoidAir quality is up to 52, Moderate
Best timeMon 13:00 – 17:00Good · Light wind, 3 m/s
AvoidNothing to avoidNo storms, rain or storm gusts
At Mon 13:00GoodLight wind, 3 m/s
Air quality
US AQI · CAMS modelModerateMain pollutant PM2.5Model value, not a station. 24-hour PM and 8-hour ozone averages.
Good 0–50Moderate 51–100Unhealthy 101–300Hazardous 301+
PM2.56 µg/m³53
PM105 µg/m³9
O₃104 µg/m³33
NO₂4 µg/m³1
15 days
click a day for its details · high / low · rainOctober – November 2026dashed: GFS only, read as a trend
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15-day outlook
by each day’s iconClick a tile to light up those days. Fri 30 Oct – Mon 9 Nov come from GFS alone: a trend, not a promise.
Monday 26 Oct
Today21° / 7°Partly cloudy
RainDryStrongest gust11 m/sSunrise · sunset07:11 · 17:46Moon at noon100 % · waning gibbous
Models agreeSee its hours ›
Do the models agree?
daily high, °CGFSICON (no run here)ECMWFspread
Within 1° of each other until Monday. From Tuesday they differ by up to 2°.Places nearby
now · within 25 kmAbout this forecastNOAA GFS · run Mon 06 UTC · grid point 15 km away, model height 52 m (real 75 m) · values of the nearest grid point, nothing filled in · model forecast, not an observation
- Model
- NOAA GFS, 0.25° global grid
- Model run
- Mon 26 Oct, 02:00 GMT-4 (11 h ago)
- Covers until
- Tue 10 Nov, 01:00 GMT-5
- Grid point used
- 42.50° N, 71.25° W — 15 km from Chelmsford, model terrain height 52 m
- Air quality and UV
- CAMS global air quality forecast (0.4°), nearest step
- Compared with
- ECMWF IFS (0.25°)
- Method
- Values of the nearest model grid point; nothing is interpolated or filled in. Sun and moon computed from the coordinates.
Chelmsford
20°
SunnyFeels like 20°Today 7° – 21°
Mon 13:00· now
Clouds thicken this afternoon, dry. Clear and cool tonight, 7°. Tomorrow partly sunny and 8° cooler, up to 12°.
Wind3 WGusts6 m/sRaindryAir (AQI)52 Moderate
UmbrellaNodry
Kite windowToday 13–17wind 4 m/s
Dry spell89 h from nowuntil Fri 06:00
TonightLow 7° at 06:00clear, no frost
Next 24 hours
swipe sideways · tap an hourMon 13:00 · Sunny20°, feels like 20°
Kite flying: GoodLight wind, 3 m/sWind3 m/s WGusts6 m/sHumidity31 %Pressure1019 hPa ↘Clouds5 %Visibility24 kmUV (CAMS)2 ModerateUS AQI52 Moderate
model value for 13:00, not a measurementSun height
Mon 26 OctMon 26 Oct21 June21 December
Sunrise · sunset07:11 · 17:46
Daylight10 h 35 min
Highest34.8° at 12:30
Civil dawn · dusk06:42 · 18:15
Outdoor planner
next 24 h, rated by fixed rules from this forecastHow we rate ›
Planner rules, per hour. Avoid: thunder; gusts from 17 m/s (kite 15, picnic 14); rain from 1.0 mm (kite, laundry, picnic, car wash: any rain; laundry also rain within 3 h). Poor: storms due within 2 h (kite 3 h); dark (sun below −6°) or after sunset; light rain; strong gusts; humid air (laundry 85 % and up); chilly (picnic under 12°); rain within 12 h (car wash). Excellent: running 8°–18° with wind under 7 and Good air; cycling 10°–24° with wind under 6; kite wind 4–8 with gusts under 11; laundry humidity under 70 % with a breeze; picnic 16° and up with wind under 6. Anything else: Good.
ExcellentGoodPoorAvoid
Best timeMon 13:00 – 17:00Good · Light wind, 3 m/s
AvoidNothing to avoidNo storms, rain or storm gusts
At Mon 13:00GoodLight wind, 3 m/s
Air quality
US AQI · CAMS modelModerateMain pollutant PM2.5Model value, not a station. 24-hour PM and 8-hour ozone averages.
Good
0–50Moderate
51–100Unhealthy
101–300Hazardous
301+
0–50Moderate
51–100Unhealthy
101–300Hazardous
301+
PM2.56 µg/m³53
PM105 µg/m³9
O₃104 µg/m³33
NO₂4 µg/m³1
Moon
from the coordinates100 %Waning gibbouslit now, Mon 13:02Rise 17:41 · set 07:48
Next phases
Last quarterSun 1 Novin 6 days
New moonMon 9 Novin 14 days
First quarterTue 17 Novin 22 days
Full moonTue 24 Novin 29 days
15 days
tap a day for its detailsOctober – November 2026dashed: GFS only · – no forecast yet
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Monday 26 Oct · TodayPartly cloudy
21° 7°RainDryGusts11Sun ↑ ↓07:11 17:46Moon100 %
Models agreeIts hours ›
15-day outlook
by each day’s iconTap a tile to light up those days above. Fri 30 Oct – Mon 9 Nov come from GFS alone: a trend.
Do the models agree?
daily highGFSICONECMWFspread
Within 1° of each other until Monday. From Tuesday they differ by up to 2°.Places nearby
now · within 25 kmAbout this forecastNOAA GFS, run Mon 06 UTC · model forecast, not an observation
- Model
- NOAA GFS, 0.25° global grid
- Model run
- Mon 26 Oct, 02:00 GMT-4 (11 h ago)
- Covers until
- Tue 10 Nov, 01:00 GMT-5
- Grid point used
- 42.50° N, 71.25° W — 15 km from Chelmsford, model terrain height 52 m
- Air quality and UV
- CAMS global air quality forecast (0.4°), nearest step
- Compared with
- ECMWF IFS (0.25°)
- Method
- Values of the nearest model grid point; nothing is interpolated or filled in. Sun and moon computed from the coordinates.