Air Quality in Horsham, United Kingdom

Drizzle
17.1°C · 81.5% humidity
17.1°
Feels 17.1°
4
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
5 9pm
5
5
4 12am
6
8
9 3am
10
10
11 6am
11
11
12 9am
12
5
5 12pm
5
5
5 3pm
5
5
5 6pm
5
5
Station readings
4
10
CAMS model adj -22
27
27
27
34
34
34
34
34
34
34
34
34
34
34
27
27
27
27
27
27
27
27
27
27
AD 728×90

Air Quality Index Trend

41h · 1 stn

Horsham's air quality is shaped by traffic emissions and residential heating. Pollution levels tend to peak during winter months when cold air traps emissions close to ground level.

81.5%
Humidity
102.4 km/h
Wind SW
1011.9 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
4
0.9 µg/m³
PM10▲
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Horsham?

Temperature & Precipitation

PM2.5 Trend

41h · 1 station
PM2.50.9 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (1 station within 25 km)
0.9
Median
0.9
Average
0.9
Low
0.9
High
PM2.5 µg/m³ · Model: 6.15 · Bias: +5.2

What is the 7-day forecast for Horsham?

08-03
37.1° 16.7°
1.44 mm
08-04
24.4° 14.5°
08-05
24.0° 13.9°
0.44 mm
08-06
27.3° 14.5°
5.56 mm
08-07
27.7° 12.9°
0.38 mm
08-08
20.8° 14.3°
1.94 mm
08-09
21.6° 13.9°
Both models agree Avg diff: 3.3°C

Where are air quality stations near Horsham?

29
Storrington Roadside, United Kingdom
18.4 km PM2.5: 7.0 µg/m³
10
Hassocks
20.1 km 16.9°C 64.7% RH PM2.5: 2.3 µg/m³ PM10: 4.6 µg/m³

What cities are near Horsham?

4 Crawley 32 Horley 4 Haywards Heath 4 Burgess Hill 74 Dorking 74 Reigate 59 Redhill 4 East Grinstead 32 Godalming 4 Portslade
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-07T23:08 UTC.