What is the air quality in Upper Alton today?

The current Air Quality Index (AQI) in Upper Alton is 44 (Good). PM2.5 concentration is 10.62 µg/m³.

What is the temperature in Upper Alton right now?

The current temperature in Upper Alton is 28.1°C (feels like 31.9°C). Humidity is 62.1% and wind speed is 43.7 km/h.

Is it safe to go outside in Upper Alton?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 10.9 (Extreme).

Air Quality in Upper Alton, United States

Windy

28.1°C · 62.1% humidity

28.1°

Feels 31.9°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Calibrated model

Nearby Monitoring Stations

AQI Forecast

54 12pm

44 3pm

38 6pm

26 9pm

25 12am

24 3am

24 6am

25 9am

Air Quality Index Trend

38h · 5 stn

View full history →

Upper Alton's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

62.1%

Humidity

43.7 km/h

Wind ENE

1013.1 hPa

Pressure

10.9

UV Extreme

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

10.62 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Upper Alton?

Temperature & Precipitation

PM2.5 Trend

38h · 5 stations

PM2.510.62 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX10.9

Extreme

What is the 7-day forecast for Upper Alton?

07-21

28.3° 22.2°

07-22

26.6° 20.4°

0.06 mm

07-23

20.8° 18.7°

0.69 mm

07-24

29.0° 18.9°

07-25

24.9° 19.6°

2.56 mm

07-26

29.9° 22.1°

1.81 mm

07-27

28.9° 21.3°

Both models agree Avg diff: 4.0°C

Where are air quality stations near Upper Alton?

Jerseyvl, Illinois, USA

27.0 km PM2.5: 5.5 µg/m³

Jerseyvl, Illinois, USA

27.0 km PM2.5: 17.3 µg/m³

What cities are near Upper Alton?

44 Alton 52 Godfrey 28 Old Jamestown 32 Spanish Lake 29 Florissant 51 Edwardsville 28 Ferguson 37 Granite City 25 Hazelwood 24 Overland

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ModerateAQI > 50 Unhealthy for Sensitive GroupsAQI > 100 UnhealthyAQI > 150 Very UnhealthyAQI > 200

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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 2026-07-21T20:09 UTC.