Readings on 18 Aug 2015

View reading for:

Region	24-hr Sulphur dioxide (µg/m³)	24-hr PM₁₀ (µg/m³)	1-hr Nitrogen dioxide (µg/m³)^a	8-hr Ozone (µg/m³)	8-hr Carbon monoxide (mg/m³)	24-hr PM_2.5 (µg/m³)
North	6(4)	33(33)	40(-)	19(8)	0.4(4)	18(58)
South	15(9)	31(31)	24(-)	23(10)	0.5(5)	16(55)
East	9(6)	25(25)	14(-)	28(12)	0.5(5)	16(55)
West	57(36)	38(38)	29(-)	22(9)	0.5(5)	21(61)
Central	10(6)	28(28)	38(-)	27(12)	0.4(4)	14(53)

1-hr PM_2.5 (µg/m³)^b Readings on 17 Aug 2015

View reading for:

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
North	7	5	7	11	16	19	19	21	23	27	17	29
South	12	6	18	10	6	13	12	6	12	11	15	14
East	12	14	14	11	12	15	9	10	14	17	15	21
West	11	16	16	12	17	11	8	14	19	25	22	29
Central	11	5	9	10	7	11	7	14	15	11	12	16
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
North	19	29	27	23	25	24	24	23	17	8	9	12
South	21	33	25	16	28	29	22	22	13	8	10	19
East	10	24	12	22	27	24	27	20	13	12	14	15
West	19	35	45	26	41	33	24	20	16	23	14	5
Central	12	22	22	25	29	15	21	13	15	5	11	11

Note:
^a Sub-index for nitrogen dioxide is reported only when the 1-hour concentration exceeds 1130 µg/m³.
^b There is no sub-index for 1-h PM_2.5.

3-hr PSI Readings from 1am to 12am on 17 Aug 2015

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
3-hr PSI	48	45	46	46	49	51	51	52	53	55	57	58
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
3-hr PSI	58	62	64	66	67	67	67	63	59	55	51	49

The real-time data is automatically published as soon as it is generated by our air monitoring stations. The data is subject to verification and correction subsequently if necessary.

Contact Us

Hotline	1800 CALL NEA (1800-225 5632)
Weather	6542 7788
Fax	6235 2611
Feedback

Our Location

Main Office
Customer Service Centre
Other Offices

National Environment Agency
40 Scotts Road, #13-00
Environment Building
Singapore 228231

Customer Service Centre
40 Scotts Road #02-00
Environment Building
Singapore 228231
Customer Service Centre (Hawkers)
HDB Hub, East Wing, #26-01
480 Lorong 6 Toa Payoh
Singapore 310480