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Deerfield (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 rain
14°C
Heavy rain
Humidity
94.4%
Wind
8 m/s
Pressure
990 hPa
Direction
205°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
-5° / 14°
Precip.
39.7mm
Max wind
14.1 m/s

Hourly Forecast

15.03
Now
Weather
14°
2.7
8
15.03
22:00
Weather
14°
6
6
15.03
23:00
Weather
8.2
10
16.03
00:00
Weather
2.7
10
16.03
01:00
Weather
5.1
10
16.03
02:00
Weather
4.4
10
16.03
03:00
Weather
2.8
11
16.03
04:00
Weather
0.3
13
16.03
05:00
Weather
-0°
0.7
12
16.03
06:00
Weather
-1°
0.3
11
16.03
07:00
Weather
-2°
0.4
9
16.03
08:00
Weather
-2°
0.6
9
16.03
09:00
Weather
-2°
0.5
10
16.03
10:00
Weather
-3°
0.9
9
16.03
11:00
Weather
-4°
0.8
10
16.03
12:00
Weather
-4°
0.5
10
16.03
13:00
Weather
-4°
0.5
10
16.03
14:00
Weather
-4°
0.7
10
16.03
15:00
Weather
-5°
0.5
12
16.03
16:00
Weather
-5°
0.4
14
16.03
17:00
Weather
-5°
0.3
14
16.03
18:00
Weather
-5°
0.3
13
16.03
19:00
Weather
-5°
0.1
12
16.03
20:00
Weather
-5°
12

Temperature

14°C
-5°C
21:00
14°C
22:00
14°C
23:00
3°C
00:00
2°C
01:00
2°C
02:00
1°C
03:00
0°C
04:00
0°C
05:00
-0°C
06:00
-1°C
07:00
-2°C
08:00
-2°C
09:00
-2°C
10:00
-3°C
11:00
-4°C
12:00
-4°C
13:00
-4°C
14:00
-4°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 08:00 20:00

Precipitation

8.2mm
0mm
21:00
2.7mm
22:00
6mm
23:00
8.2mm
00:00
2.7mm
01:00
5.1mm
02:00
4.4mm
03:00
2.8mm
04:00
0.3mm
05:00
0.7mm
06:00
0.3mm
07:00
0.4mm
08:00
0.6mm
09:00
0.5mm
10:00
0.9mm
11:00
0.8mm
12:00
0.5mm
13:00
0.5mm
14:00
0.7mm
15:00
0.5mm
16:00
0.4mm
17:00
0.3mm
18:00
0.3mm
19:00
0.1mm
21:00 08:00 20:00

Wind

14.1m/s
0m/s
21:00
8.2 m/s
22:00
6 m/s
23:00
10 m/s
00:00
9.8 m/s
01:00
9.5 m/s
02:00
9.7 m/s
03:00
10.8 m/s
04:00
13.1 m/s
05:00
11.6 m/s
06:00
10.5 m/s
07:00
8.6 m/s
08:00
9.2 m/s
09:00
9.6 m/s
10:00
9.3 m/s
11:00
10.4 m/s
12:00
9.9 m/s
13:00
9.8 m/s
14:00
10 m/s
15:00
11.6 m/s
16:00
13.5 m/s
17:00
14.1 m/s
18:00
13.1 m/s
19:00
12.1 m/s
20:00
12.1 m/s
21:00 08:00 20:00

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
30.3 km
131
43.7%

Measurement time: 2026-03-15 21:00

Calculated from PM2.5/PM10

PM2.5
30.3 km
48 µg/m3
57.1%

Measurement time: 2026-03-15 21:00

source: Aqicn

O3
33.1 km
28.9 µg/m3
18.1%

Measurement time: 2026-03-15 21:00

source: Aqicn

PM10
94.4 km
12 µg/m3
8.6%

Measurement time: 2026-03-15 20:00

source: Aqicn

NO2
94.4 km
7.5 µg/m3
3.8%

Measurement time: 2026-03-15 20:00

source: Aqicn

CO
94.4 km
0.0034 mg/m3
0%

Measurement time: 2026-03-15 20:00

source: Aqicn

About Air Quality in Deerfield

Air quality in Deerfield 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 Deerfield

  • 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 Deerfield?

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 Deerfield

If you're planning outdoor activities in Deerfield, 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.