AQI

Watford Air Quality Index & Realtime Air Pollution

Live AQI
28(AQI-US)
Air Quality is
Good
PM2.5 :5.4µg/m³
PM10 :11µg/m³
Good
Moderate
Poor
Unhealthy
Severe
Hazardous
050100150200300301+
Good air quality mascot

Primary Air Pollutants Watford (England)

PM2.55µg/m³
PM2.5
Fine particles
PM1011µg/m³
PM10
Coarse particles
SO₂0µg/m³
SO₂
Sulphur dioxide
CO111µg/m³
CO
Carbon monoxide
NO₂3µg/m³
NO₂
Nitrogen dioxide
O₃61µg/m³
O₃
Ozone

Hourly forecast Watford (England)

Now13°
Light drizzle
04:0013°
Overcast
05:0013°
Overcast
06:0013°
Partly cloudy
07:0013°
Light drizzle
08:0013°
Moderate drizzle
09:0014°
Partly cloudy
10:0015°
Partly cloudy
11:0015°
Light drizzle
12:0014°
Light drizzle
13:0014°
Moderate drizzle
14:0016°
Dense drizzle
15:0017°
Light drizzle
16:0017°
Light drizzle
17:0016°
Light drizzle
18:0017°
Overcast
19:0017°
Overcast
20:0015°
Overcast
21:0014°
Clear sky
22:0014°
Mostly clear
23:0013°
Mostly clear
00:0013°
Partly cloudy
01:0012°
Clear sky
02:0012°
Mostly clear

Health Recommendations for Watford Residents

Based on current air quality: Good · AQI 28

Good
Air Purifier
Air PurifierTurn Off
Car Filter
Car FilterAdvisable
N95 Mask
N95 MaskAdvisable
Stay Indoor
Stay IndoorAdvisable

UV Index

0

Low

Safe to be outside. Minimal UV risk.

Wind

19.1 km/h

Moderate wind — noticeable and steady.

AQI Graph

Historical AQI Data Watford (England)

21
Min. AQIat 6:00 AM on 3rd Jun
28
Max. AQIat 8:00 PM on 3rd Jun
03-06-2026Time04-06-2026

United Kingdom’s Major Cities AQI Overview


Most Polluted Cities by AQI United Kingdom

30
Good1x above Standard
30
Good1x above Standard
30
Good1x above Standard
30
Good1x above Standard
30
Good1x above Standard
30
Good1x above Standard
30
Good1x above Standard
30
Good1x above Standard
29
Good1x above Standard
29
Good1x above Standard
Last Updated: 03 Jun 2026, 17:25

Health Advice For People Living in Watford

0.2
Cigarettes
per day
Weekly1.4 Cigarettes
Monthly6 Cigarettes

Breathing the air in this location is equivalent to smoking 0.2 cigarettes a day.

Disclaimer: This cigarette-equivalent estimate is calculated using the average PM2.5 concentration from the past 24 hours, assuming constant exposure throughout that period.
Solutions for Watford Current AQI (US)
Air Purifier
Air PurifierTurn Off
Car Filter
Car FilterAdvisable
N95 Mask
N95 MaskAdvisable
Stay Indoor
Stay IndoorAdvisable
Must turn on the air purifier to enjoy fresh air.Get an Air Purifier

Prevent Health Problems: Understand Your Risks

Watford · Current air quality: Good · AQI 28

Low Trigger Risk

Headaches

Risk of Headaches symptoms is Low when AQI of Watford is Good (0-50).

Common signs

Some common signs are: Pressure or tightness around the forehead and temples, Sensitivity to light or smell, Fatigue or difficulty concentrating.

Do’s :
  • Choose indoor, clean indoor air when the AQI is elevated.
  • Stay hydrated and take short breaks from devices or harsh light if you are migraine-prone.
  • If you Make use of prescribed migraine meds, Keep close them accessible.
Don’ts :
  • Try not to do intense outdoor exercise during worse AQI periods.
  • Don’t ignore worsening symptoms that feel unusual for you.

Disclaimer: The health risks mentioned above are precautionary recommendations based on current AQI levels. While you may not experience immediate effects, prolonged exposure to air pollution can lead to these health issues over time. This is not medical advice. Please consult a clinician if you experience severe, unusual, or worsening symptoms.

Air Quality FAQs at Watford, England

The current real-time AQI (US) level in Watford, England is 28 (Good). This was last updated recently.

The best AQI (US) level was generally lower during the early afternoon in the last 24 hours.

The worst AQI (US) level typically peaks during early morning or late evening hours due to temperature inversion.

The AQI (US) levels in Watford, England have been fluctuating throughout the last 24 hours depending on traffic and weather conditions.

Current AQI (US) levels are good for everyone. It's advised to adjust your outdoor activities based on personal sensitivity.