Air Quality in Horsham, United Kingdom
Drizzle
7.9°C · 91.4% humidity
7.9°
Feels 4.0°
6
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Horsham's air quality — share it
AQI Forecast
Calibrated
5
7pm
5
5
6
10pm
4
4
4
1am
5
5
5
4am
5
5
5
7am
7
7
7
10am
5
5
5
1pm
5
7
5
4pm
5
5
Station readings
7
5
5
CAMS model
adj -20
25
25
25
24
24
24
24
25
25
25
25
25
25
27
27
27
25
25
25
25
27
25
25
25
Air Quality Index Trend
8h · 1 stnHorsham'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.
91.4%
Humidity
27.2 km/h
Wind W
1020.8 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5
1.4 µg/m³
PM10▲
13.7 µg/m³
050100150200300500
What is the weather forecast for Horsham?
Temperature & Precipitation
PM2.5 Trend
8h · 1 stationPM2.51.4 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (1 station within 25 km)
1.4
Median
1.4
Average
1.4
Low
1.4
High
PM2.5 µg/m³ · Model: 5.9 · Bias: +4.5
What is the 7-day forecast for Horsham?
06-08
17.4° 8.4°
1.19 mm
06-09
17.0° 7.9°
1.13 mm
06-10
15.9° 12.4°
9.56 mm
06-11
27.5° 14.0°
1.94 mm
06-12
21.2° 9.9°
06-13
24.3° 8.7°
06-14
19.3° 10.0°
3.44 mm
Both models agree
Avg diff: 3.8°C
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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 2026-06-08T21:05 UTC.