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Arlington Heights (Illinois) (US)

Air Quality Trend (last 7 days)

Good (0-50)
Moderate (51-100)
Unhealthy for Sensitive Groups (101-150)
Unhealthy (151-200)
Very Unhealthy (201-300)
Hazardous (300+)

Weather - 48h MET Norway

Heavy snow
0°C
Heavy snow
Humidity
96.7%
Wind
9 m/s
Pressure
993.5 hPa
Direction
354°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
-9° / 0°
Precip.
9.4mm
Max wind
11 m/s

Hourly Forecast

16.03
Now
Weather
2
9
16.03
04:00
Weather
-0°
0.8
8
16.03
05:00
Weather
-1°
0.3
8
16.03
06:00
Weather
-1°
0.6
8
16.03
07:00
Weather
-2°
0.7
6
16.03
08:00
Weather
-2°
0.8
6
16.03
09:00
Weather
-3°
0.5
7
16.03
10:00
Weather
-4°
0.6
7
16.03
11:00
Weather
-4°
0.5
8
16.03
12:00
Weather
-5°
0.4
7
16.03
13:00
Weather
-5°
0.5
7
16.03
14:00
Weather
-5°
0.5
8
16.03
15:00
Weather
-5°
0.3
10
16.03
16:00
Weather
-5°
0.3
11
16.03
17:00
Weather
-5°
0.2
11
16.03
18:00
Weather
-5°
0.2
11
16.03
19:00
Weather
-5°
0.2
10
16.03
20:00
Weather
-5°
10
16.03
21:00
Weather
-6°
10
16.03
22:00
Weather
-6°
9
16.03
23:00
Weather
-7°
9
17.03
00:00
Weather
-8°
8
17.03
01:00
Weather
-8°
7
17.03
02:00
Weather
-9°
8

Temperature

0°C
-9°C
03:00
0°C
04:00
-0°C
05:00
-1°C
06:00
-1°C
07:00
-2°C
08:00
-2°C
09:00
-3°C
10:00
-4°C
11:00
-4°C
12:00
-5°C
13:00
-5°C
14:00
-5°C
15:00
-5°C
16:00
-5°C
17:00
-5°C
18:00
-5°C
19:00
-5°C
20:00
-5°C
21:00
-6°C
22:00
-6°C
23:00
-7°C
00:00
-8°C
01:00
-8°C
02:00
-9°C
03:00 14:00 02:00

Precipitation

2mm
0mm
03:00
2mm
04:00
0.8mm
05:00
0.3mm
06:00
0.6mm
07:00
0.7mm
08:00
0.8mm
09:00
0.5mm
10:00
0.6mm
11:00
0.5mm
12:00
0.4mm
13:00
0.5mm
14:00
0.5mm
15:00
0.3mm
16:00
0.3mm
17:00
0.2mm
18:00
0.2mm
19:00
0.2mm
03:00 14:00 02:00

Wind

11m/s
0m/s
03:00
8.5 m/s
04:00
7.7 m/s
05:00
7.9 m/s
06:00
7.7 m/s
07:00
6.1 m/s
08:00
6.1 m/s
09:00
7.1 m/s
10:00
7.2 m/s
11:00
7.7 m/s
12:00
7 m/s
13:00
7.2 m/s
14:00
8.1 m/s
15:00
10 m/s
16:00
11 m/s
17:00
10.9 m/s
18:00
10.9 m/s
19:00
9.9 m/s
20:00
9.6 m/s
21:00
9.7 m/s
22:00
8.9 m/s
23:00
8.6 m/s
00:00
7.6 m/s
01:00
7.3 m/s
02:00
7.5 m/s
03:00 14:00 02:00

Radiation

No sensor within 100 km.

We display the worst measurements from all stations in the area. This approach provides a more cautious assessment of air quality, accounting for local pollution sources.

AQI
28.8 km
25
8.3%

Measurement time: 2026-03-16 04:00

Calculated from PM2.5/PM10

O3
26.1 km
34.4 µg/m3
21.5%

Measurement time: 2026-03-16 04:00

source: Aqicn

PM2.5
28.8 km
6 µg/m3
7.1%

Measurement time: 2026-03-16 04:00

source: Aqicn

About Air Quality in Arlington Heights

Air quality in Arlington Heights is monitored in real-time by sensors and measurement stations. On this page you'll find current data on major air pollutants including particulate matter PM2.5 and PM10, nitrogen dioxide (NO2), ozone (O3), and radiation levels.

Common Pollutants in Arlington Heights

  • PM2.5 - fine particulate matter up to 2.5 micrometers, particularly harmful to health
  • PM10 - particulate matter up to 10 micrometers from traffic and industry
  • NO2 - nitrogen dioxide mainly emitted by vehicles
  • O3 - tropospheric ozone formed in photochemical reactions

When is Air Quality Best in Arlington Heights?

Generally, the best air quality occurs:

  • Early morning (5:00-7:00 AM) before rush hour traffic
  • After rainfall which cleanses the atmosphere
  • During strong winds that disperse pollutants
  • In summer months when heating systems are less used

Tips for Runners in Arlington Heights

If you're planning outdoor activities in Arlington Heights, always check the current AQI value. When AQI exceeds 100, consider moving your workout indoors or shortening the distance. People with respiratory issues, children, and seniors should be especially cautious during elevated pollution levels. Choose routes away from busy streets and industrial areas.