An air quality index (AQI) is used by government agencies to communicate to the public how polluted the air currently is or how polluted it is forecast to become.[2][3] AQI information is obtained by averaging readings from an air quality sensor, which can increase due to vehicle traffic, forest fires, or anything that can increase air pollution. Pollutants tested include ozone, nitrogen dioxide, and sulfur dioxide, among others.
Public health risks increase as the AQI rises, especially affecting children, the elderly, and individuals with respiratory or cardiovascular issues. During these times, governmental bodies generally encourage people to reduce physical activity outdoors, or even avoid going out altogether.
This API will provide you with the AQI of any place in the world.
Just pass the Coordinates of the location that you want to get its AQI from.
Receive data like:
The key benefit of using an AQI is the ability to communicate data with the public, both easily and conveniently. AQI can demystify data – you don’t need to be an expert to understand AQI values – they’re easily scaled and color-coded – there is no need to understand units and concentrations. Often data are communicated in relation to a standard – but this approach assumes that people understand that there are no safe limits for concentrations and that just because concentrations are below a guideline doesn't mean that there are no health impacts.
Transforming your data into something the public can understand is really valuable – you retain your traditional dataset, and for minimal effort and calculation you can present it in an understandable and recognizable form for everyone.
AQI calculations are very straightforward – often they are as simple as assessing what range of values a concentration falls in. Accordingly, they’re very easy to display on websites or in real-time on a screen. Since many AQI is calculated on the highest pollutant concentration, you can calculate an AQI using a single pollutant – so if your network of sites has a bit of variation is not a problem – you can still create a useful AQI from the data you have.
Besides the number of API calls per month, there is a limitation of 25 calls per day on FREE, BASIC, and PRO plans.
Retrieves current air quality conditions for any location in the world, given a lat/long.
Current Air Quality Response fields
lat: Latitude (Degrees).lon: Longitude (Degrees).timezone: Local IANA Timezone.city_name: Nearest city name.country_code: Country abbreviation.state_code: State abbreviation/code.data: [
{
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Continue with Githubaqi: Air Quality Index [US - EPA standard 0 - +500]o3: Concentration of surface O3 (µg/m³)so2: Concentration of surface SO2 (µg/m³)no2: Concentration of surface NO2 (µg/m³)co: Concentration of carbon monoxide (µg/m³)pm25: Concentration of particulate matter < 2.5 microns (µg/m³)pm10: Concentration of particulate matter < 10 microns (µg/m³)pollen_level_tree: Tree pollen level (0 = None, 1 = Low, 2 = Moderate, 3 = High, 4 = Very High)pollen_level_grass: Grass pollen level (0 = None, 1 = Low, 2 = Moderate, 3 = High, 4 = Very High)pollen_level_weed: Weed pollen level (0 = None, 1 = Low, 2 = Moderate, 3 = High, 4 = Very High)mold_level: Mold pollen level (0 = None, 1 = Low, 2 = Moderate, 3 = High, 4 = Very High)predominant_pollen_type: Predominant pollen type (Trees/Weeds/Molds/Grasses)
{"city_name":"Daly City","country_code":"US","data":[{"aqi":13,"co":534.3333,"mold_level":1,"no2":19.722223,"o3":28.5,"pm10":1.722358,"pm25":1.2917686,"pollen_level_grass":0,"pollen_level_tree":1,"pollen_level_weed":1,"predominant_pollen_type":"Molds","so2":0.75}],"lat":37.7547,"lon":-122.4846,"state_code":"CA","timezone":"America/Los_Angeles"}
| Object | Description |
|---|---|
lon |
[Required] Longitude |
lat |
[Required] Latitude |
Returns a 3-day (72-hour) air quality forecast for any point in the world given a lat/long.
Example Response:
lat: Latitude (Degrees).lon: Longitude (Degrees).timezone: Local IANA Timezone.city_name: Nearest city name.country_code: Country abbreviation.state_code: State abbreviation/code.
[
{
timestamp_local: Timestamp at local time.timestamp_utc: Timestamp at UTC time.ts: Unix Timestamp at UTC time.aqi: Air Quality Index [US - EPA standard 0 - +500]o3: Concentration of surface O3 (µg/m³)so2: Concentration of surface SO2 (µg/m³)no2: Concentration of surface NO2 (µg/m³)co: Concentration of carbon monoxide (µg/m³)pm25: Concentration of particulate matter < 2.5 microns (µg/m³)pm10: Concentration of particulate matter < 10 microns (µg/m³)}, … ]
{"city_name":"Daly City","country_code":"US","data":[{"aqi":13,"co":396.70322,"datetime":"2022-12-05:18","no2":11.837619,"o3":28.401041,"pm10":1.722358,"pm25":0.9956905,"so2":0.010477379,"timestamp_local":"2022-12-05T10:00:00","timestamp_utc":"2022-12-05T18:00:00","ts":1670263200},{"aqi":13,"co":328.8895,"datetime":"2022-12-05:19","no2":7.895717,"o3":28.566137,"pm10":1.6387925,"pm25":0.82655746,"so2":0.009662472,"timestamp_local":"2022-12-05T11:00:00","timestamp_utc":"2022-12-05T19:00:00","ts":1670266800},{"aqi":13.8,"co":260.40823,"datetime":"2022-12-05:20","no2":3.9535484,"o3":29.160389,"pm10":1.5385246,"pm25":0.65835375,"so2":0.00896398,"timestamp_local":"2022-12-05T12:00:00","timestamp_utc":"2022-12-05T20:00:00","ts":1670270400},{"aqi":14,"co":191.92696,"datetime":"2022-12-05:21","no2":0.011546945,"o3":29.683113,"pm10":1.425729,"pm25":0.5,"so2":0.008381903,"timestamp_local":"2022-12-05T13:00:00","timestamp_utc":"2022-12-05T21:00:00","ts":1670274000},{"aqi":14,"co":191.92696,"datetime":"2022-12-05:22","no2":0.012048986,"o3":29.683113,"pm10":1.3663933,"pm25":0.5,"so2":0.007916242,"timestamp_local":"2022-12-05T14:00:00","timestamp_utc":"2022-12-05T22:00:00","ts":1670277600},{"aqi":14,"co":191.92696,"datetime":"2022-12-05:23","no2":0.012885721,"o3":30.040741,"pm10":1.3145452,"pm25":0.5,"so2":0.007566996,"timestamp_local":"2022-12-05T15:00:00","timestamp_utc":"2022-12-05T23:00:00","ts":1670281200},{"aqi":14,"co":193.59589,"datetime":"2022-12-06:00","no2":0.014224498,"o3":30.398369,"pm10":1.2626967,"pm25":0.5,"so2":0.0073341653,"timestamp_local":"2022-12-05T16:00:00","timestamp_utc":"2022-12-06T00:00:00","ts":1670284800},{"aqi":14,"co":193.59589,"datetime":"2022-12-06:01","no2":0.015228579,"o3":30.398369,"pm10":1.2106085,"pm25":0.5,"so2":0.0071595423,"timestamp_local":"2022-12-05T17:00:00","timestamp_utc":"2022-12-06T01:00:00","ts":1670288400},{"aqi":14,"co":193.59589,"datetime":"2022-12-06:02","no2":0.016734703,"o3":30.755997,"pm10":1.1501168,"pm25":0.5,"so2":0.0069849193,"timestamp_local":"2022-12-05T18:00:00","timestamp_utc":"2022-12-06T02:00:00","ts":1670292000},{"aqi":14,"co":193.59589,"datetime":"2022-12-06:03","no2":0.019244907,"o3":30.755997,"pm10":1.1255465,"pm25":0.5,"so2":0.0068102963,"timestamp_local":"2022-12-05T19:00:00","timestamp_utc":"2022-12-06T03:00:00","ts":1670295600},{"aqi":14,"co":193.59589,"datetime":"2022-12-06:04","no2":0.02024899,"o3":30.755997,"pm10":1.145584,"pm25":0.5,"so2":0.0069849193,"timestamp_local":"2022-12-05T20:00:00","timestamp_utc":"2022-12-06T04:00:00","ts":1670299200},{"aqi":14,"co":193.59589,"datetime":"2022-12-06:05","no2":0.020751031,"o3":30.755997,"pm10":1.1813651,"pm25":0.5,"so2":0.007392373,"timestamp_local":"2022-12-05T21:00:00","timestamp_utc":"2022-12-06T05:00:00","ts":1670302800},{"aqi":15,"co":195.26482,"datetime":"2022-12-06:06","no2":0.021085724,"o3":31.82888,"pm10":1.2185497,"pm25":0.5,"so2":0.0077998266,"timestamp_local":"2022-12-05T22:00:00","timestamp_utc":"2022-12-06T06:00:00","ts":1670306400},{"aqi":15,"co":196.93375,"datetime":"2022-12-06:07","no2":0.021253072,"o3":32.901764,"pm10":1.2270675,"pm25":0.5,"so2":0.008032657,"timestamp_local":"2022-12-05T23:00:00","timestamp_utc":"2022-12-06T07:00:00","ts":1670310000},{"aqi":15,"co":198.60268,"datetime":"2022-12-06:08","no2":0.021755114,"o3":33.25939,"pm10":1.221188,"pm25":0.5,"so2":0.0084983185,"timestamp_local":"2022-12-06T00:00:00","timestamp_utc":"2022-12-06T08:00:00","ts":1670313600},{"aqi":15,"co":200.2716,"datetime":"2022-12-06:09","no2":0.021755114,"o3":33.25939,"pm10":1.2161964,"pm25":0.5,"so2":0.008731149,"timestamp_local":"2022-12-06T01:00:00","timestamp_utc":"2022-12-06T09:00:00","ts":1670317200},{"aqi":15,"co":198.60268,"datetime":"2022-12-06:10","no2":0.020918379,"o3":32.901764,"pm10":1.2339209,"pm25":0.5,"so2":0.008847564,"timestamp_local":"2022-12-06T02:00:00","timestamp_utc":"2022-12-06T10:00:00","ts":1670320800},{"aqi":15,"co":196.93375,"datetime":"2022-12-06:11","no2":0.019412255,"o3":31.471252,"pm10":1.2955129,"pm25":0.5,"so2":0.009080395,"timestamp_local":"2022-12-06T03:00:00","timestamp_utc":"2022-12-06T11:00:00","ts":1670324400},{"aqi":14,"co":195.26482,"datetime":"2022-12-06:12","no2":0.017738786,"o3":29.325485,"pm10":1.4218973,"pm25":0.5,"so2":0.009778887,"timestamp_local":"2022-12-06T04:00:00","timestamp_utc":"2022-12-06T12:00:00","ts":1670328000},{"aqi":12,"co":193.59589,"datetime":"2022-12-06:13","no2":0.01640001,"o3":26.82209,"pm10":1.6274004,"pm25":0.5,"so2":0.011059456,"timestamp_local":"2022-12-06T05:00:00","timestamp_utc":"2022-12-06T13:00:00","ts":1670331600},{"aqi":12,"co":193.59589,"datetime":"2022-12-06:14","no2":0.016734703,"o3":25.391579,"pm10":1.8900657,"pm25":0.55901,"so2":0.012572855,"timestamp_local":"2022-12-06T06:00:00","timestamp_utc":"2022-12-06T14:00:00","ts":1670335200},{"aqi":12,"co":196.93375,"datetime":"2022-12-06:15","no2":0.016232662,"o3":25.391579,"pm10":2.1060703,"pm25":0.6154387,"so2":0.014086254,"timestamp_local":"2022-12-06T07:00:00","timestamp_utc":"2022-12-06T15:00:00","ts":1670338800},{"aqi":12,"co":200.2716,"datetime":"2022-12-06:16","no2":0.014559191,"o3":25.391579,"pm10":2.1925764,"pm25":0.64558524,"so2":0.015133992,"timestamp_local":"2022-12-06T08:00:00","timestamp_utc":"2022-12-06T16:00:00","ts":1670342400},{"aqi":12,"co":205.2784,"datetime":"2022-12-06:17","no2":0.011881638,"o3":25.391579,"pm10":2.173132,"pm25":0.64299154,"so2":0.015133992,"timestamp_local":"2022-12-06T09:00:00","timestamp_utc":"2022-12-06T17:00:00","ts":1670346000},{"aqi":11,"co":206.94733,"datetime":"2022-12-06:18","no2":0.009455107,"o3":24.676323,"pm10":2.1096346,"pm25":0.6254485,"so2":0.014784746,"timestamp_local":"2022-12-06T10:00:00","timestamp_utc":"2022-12-06T18:00:00","ts":1670349600},{"aqi":11,"co":208.61626,"datetime":"2022-12-06:19","no2":0.00786531,"o3":23.60344,"pm10":2.0845199,"pm25":0.61652184,"so2":0.014551915,"timestamp_local":"2022-12-06T11:00:00","timestamp_utc":"2022-12-06T19:00:00","ts":1670353200},{"aqi":10,"co":210.28519,"datetime":"2022-12-06:20","no2":0.0069449013,"o3":22.351742,"pm10":2.1125846,"pm25":0.6164491,"so2":0.014668331,"timestamp_local":"2022-12-06T12:00:00","timestamp_utc":"2022-12-06T20:00:00","ts":1670356800},{"aqi":10,"co":210.28519,"datetime":"2022-12-06:21","no2":0.006526534,"o3":20.742416,"pm10":2.2154396,"pm25":0.63252914,"so2":0.015832484,"timestamp_local":"2022-12-06T13:00:00","timestamp_utc":"2022-12-06T21:00:00","ts":1670360400},{"aqi":9,"co":208.61626,"datetime":"2022-12-06:22","no2":0.006526534,"o3":19.133091,"pm10":2.4364655,"pm25":0.663584,"so2":0.018859282,"timestamp_local":"2022-12-06T14:00:00","timestamp_utc":"2022-12-06T22:00:00","ts":1670364000},{"aqi":8,"co":205.2784,"datetime":"2022-12-06:23","no2":0.0069449013,"o3":17.881393,"pm10":2.8038397,"pm25":0.7088708,"so2":0.024912879,"timestamp_local":"2022-12-06T15:00:00","timestamp_utc":"2022-12-06T23:00:00","ts":1670367600},{"aqi":8,"co":201.94054,"datetime":"2022-12-07:00","no2":0.0076142894,"o3":17.523766,"pm10":3.1683123,"pm25":0.75145304,"so2":0.033527613,"timestamp_local":"2022-12-06T16:00:00","timestamp_utc":"2022-12-07T00:00:00","ts":1670371200},{"aqi":8,"co":200.2716,"datetime":"2022-12-07:01","no2":0.008869393,"o3":17.344952,"pm10":3.6645446,"pm25":0.83843374,"so2":0.044237822,"timestamp_local":"2022-12-06T17:00:00","timestamp_utc":"2022-12-07T01:00:00","ts":1670374800},{"aqi":8,"co":200.2716,"datetime":"2022-12-07:02","no2":0.01071021,"o3":17.523766,"pm10":4.2250576,"pm25":0.959195,"so2":0.052619725,"timestamp_local":"2022-12-06T18:00:00","timestamp_utc":"2022-12-07T02:00:00","ts":1670378400},{"aqi":8,"co":201.94054,"datetime":"2022-12-07:03","no2":0.012885721,"o3":17.523766,"pm10":4.5773454,"pm25":1.0486393,"so2":0.056810677,"timestamp_local":"2022-12-06T19:00:00","timestamp_utc":"2022-12-07T03:00:00","ts":1670382000},{"aqi":8,"co":201.94054,"datetime":"2022-12-07:04","no2":0.013387762,"o3":17.70258,"pm10":4.5984817,"pm25":1.0702552,"so2":0.05727634,"timestamp_local":"2022-12-06T20:00:00","timestamp_utc":"2022-12-07T04:00:00","ts":1670385600},{"aqi":8,"co":203.60947,"datetime":"2022-12-07:05","no2":0.0132204145,"o3":17.70258,"pm10":4.516341,"pm25":1.0477047,"so2":0.053551048,"timestamp_local":"2022-12-06T21:00:00","timestamp_utc":"2022-12-07T05:00:00","ts":1670389200},{"aqi":8,"co":203.60947,"datetime":"2022-12-07:06","no2":0.013053068,"o3":17.881393,"pm10":4.418773,"pm25":1.0392885,"so2":0.049360096,"timestamp_local":"2022-12-06T22:00:00","timestamp_utc":"2022-12-07T06:00:00","ts":1670392800},{"aqi":8,"co":203.60947,"datetime":"2022-12-07:07","no2":0.0132204145,"o3":17.881393,"pm10":4.272094,"pm25":1.0699816,"so2":0.04749745,"timestamp_local":"2022-12-06T23:00:00","timestamp_utc":"2022-12-07T07:00:00","ts":1670396400},{"aqi":8,"co":203.60947,"datetime":"2022-12-07:08","no2":0.013387762,"o3":17.881393,"pm10":4.278772,"pm25":1.1951408,"so2":0.048894435,"timestamp_local":"2022-12-07T00:00:00","timestamp_utc":"2022-12-07T08:00:00","ts":1670400000},{"aqi":8,"co":203.60947,"datetime":"2022-12-07:09","no2":0.0135551095,"o3":17.881393,"pm10":4.616996,"pm25":1.4171747,"so2":0.053085387,"timestamp_local":"2022-12-07T01:00:00","timestamp_utc":"2022-12-07T09:00:00","ts":1670403600},{"aqi":8,"co":201.94054,"datetime":"2022-12-07:10","no2":0.013722456,"o3":17.881393,"pm10":5.169052,"pm25":1.7054498,"so2":0.059138983,"timestamp_local":"2022-12-07T02:00:00","timestamp_utc":"2022-12-07T10:00:00","ts":1670407200},{"aqi":8,"co":201.94054,"datetime":"2022-12-07:11","no2":0.013889803,"o3":17.881393,"pm10":5.841985,"pm25":2.026359,"so2":0.06798655,"timestamp_local":"2022-12-07T03:00:00","timestamp_utc":"2022-12-07T11:00:00","ts":1670410800},{"aqi":10,"co":200.2716,"datetime":"2022-12-07:12","no2":0.013889803,"o3":18.060207,"pm10":6.5897126,"pm25":2.3643124,"so2":0.07729977,"timestamp_local":"2022-12-07T04:00:00","timestamp_utc":"2022-12-07T12:00:00","ts":1670414400},{"aqi":11,"co":200.2716,"datetime":"2022-12-07:13","no2":0.0135551095,"o3":18.060207,"pm10":6.817134,"pm25":2.65...
| Object | Description |
|---|---|
lat |
[Required] Latitude. |
lon |
[Required] Longitude. |
Returns the past 24 hours of air quality observations for any point in the world given a lat/long.
Response details:
lat: Latitude (Degrees).lon: Longitude (Degrees).timezone: Local IANA Timezone.city_name: Nearest city name.country_code: Country abbreviation.state_code: State abbreviation/code.
[
{
timestamp_local: Timestamp at local time.timestamp_utc: Timestamp at UTC time.ts: Unix Timestamp at UTC time.aqi: Air Quality Index [US - EPA standard 0 - +500]o3: Concentration of surface O3 (µg/m³)so2: Concentration of surface SO2 (µg/m³)no2: Concentration of surface NO2 (µg/m³)co: Concentration of carbon monoxide (µg/m³)pm25: Concentration of particulate matter < 2.5 microns (µg/m³)pm10: Concentration of particulate matter < 10 microns (µg/m³)}, … ]
{"city_name":"Daly 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| Object | Description |
|---|---|
lon |
[Required] Longitude. |
lat |
[Required] Latitude |
After signing up, every developer is assigned a personal API access key, a unique combination of letters and digits provided to access to our API endpoint. To authenticate with the Air Quality Index API REST API, simply include your bearer token in the Authorization header.
| Header | Description |
|---|---|
Authorization
|
[Required] Should be Bearer access_key. See "Your API Access Key" above when you are subscribed. |
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